Index

Photo-electro-catalysis using supraparticles

 

Research
The Supraparticle Group

Logo: The Supraparticle Group

Photo-electro-catalysis using supraparticles

 

Icon: Photo-electro-catalysisWe started to look into the cooperative interplay of stimulable and catalytically active building blocks united in one single supraparticle entity.

More ist yet to come…

Laura Bittel

Professorship for
Inorganic Chemistry
The Supraparticle Group

Logo: The Supraparticle Group

Laura Bittel

Fraunhofer Institute for Silicate Research ISC
The Particle Technology Group

 

Laura Bittel graduated from Friedrich Alexander University with a Master of Science degree in Chemical and Bioengineering in May 2021. During her bachelor’s degree in process and environmental engineering at Heilbronn University of Applied Sciences, she completed internships at adidas AG and Deutsche ACCUmotive GmbH & Co. KG. She performed her bachelor’s thesis at Daimler AG in battery research with a focus on life cycle simulation.

After she finished her Master’s thesis at the Fraunhofer Institute in Würzburg in the group of Prof. Dr. Mandel, she started her PhD within the group. Her research focuses on multicomponent catalytic supraparticles.

 

Huanhuan Zhou

Professorship for
Inorganic Chemistry
The Supraparticle Group

Logo: The Supraparticle Group

 

 

 

Huanhuan Zhou

Department of Chemistry and Pharmacy
Professorship for Inorganic Chemistry (Prof. Dr. Mandel)

Room: Room A 2.8
Egerlandstraße 1
91058 Erlangen

 

Huanhuan Zhou obtained her master’s degree from National Center for Nanoscience and Technology, University of Chinese Academy of Sciences in 2020. During her master studies, her research activities focused on understanding and modeling electrochemical processes and using that knowledge for the development of high-performance energy storage devices. These research efforts cover from nanomaterials design to charge/discharge simulation.

Huanhuan joined the Suprapaticle Group as a PhD candidate in 10/2020. Her research focuses on design of interactive supraparticles.

 

Publications:

2021

2020

 

 

 

 

 

 

 

Open positions

Open Positions
The Supraparticle Group

Logo: The Supraparticle Group

 

We are always looking for dedicated students who would like to do a BSc or MSc thesis or work as an intern. PhD positions are available occasionally as well.

For detailed information on our topics of research please visit the Research or Publications section on our website.

Interested? Please contact:  karl.mandel@fau.de or susanne.wintzheimer@fau.de.

 

 

The Particle Technology Group at Fraunhofer ISC:

Please, also have a look at the interesting research of the Fraunhofer part of our group in Würzburg.

https://www.isc.fraunhofer.de/en/fields-of-activity/processing/particle-technology.html

https://www.partikel.fraunhofer.de

Interested? Please contact Karl Mandel directly: karl.mandel@isc.fraunhofer.de

Sarah Wenderoth

Julius-Mximilians University Würzburg
Chemical Technology for Material Synthesis

Logo: The Supraparticle Group

 

Sarah Wenderoth

Julius-Maximilians-Universität Würzburg
Chair for Chemical Technology of Materials Synthesis

Röntgenring 11
97070 Würzburg

 

Sarah Wenderoth graduated from the Saarland University in 2018 with a Master of Science degree in Chemistry. During her studies she was focusing on the synthesis, modification and characterisation of nanoparticles. Her master thesis was performed in cooperation between the Leibniz-Institute for New Materials in Saarbrücken and the Monash Institute of Pharmaceutical Sciences in Melbourne under the supervision of Prof. Dr. Tobias Kraus.
Afterwards she started her PhD at the Julius-Maxmilians University in Würzburg in Prof. Dr. Karl Mandel’s group. The topic of her PhD is the synthesis and characterisation of shear stress indicator supraparticles based on nanoparticle building blocks.

 

Publications:

2021

2020

2019

 

 

 

2017

Publications

List of publications Karl Mandel

Logo: The Supraparticle Group

 

 

[74]     Wolf A., Lorrmann H., Flegler A., Wolf A., Guerfi A., Mandel K., Giffin G. A.
Abrasive blasting of lithium metal surfaces yields clean and 3D structured lithium metal anodes with enhanced properties
In: Energy Technology (2021)
DOI: 10.1002/ente.202100455

 

 

[73]     Reichstein J., Miller F., Wintzheimer S., Mandel K.
Communicating Particles: Identification Taggant and Temperature Recorder in One Single Supraparticle
In: Advanced Functional Materials (2021)
DOI: 10.1002/adfm.202104189

 

 

[72]     Granath T., Loebmann P., Mandel K.
Overcoming the Inhibition Effects of Citrate: Precipitation of Ferromagnetic Magnetite Nanoparticles with Tunable Morphology, Magnetic Properties and Surface Charge
via Ferrous Citrate Oxidation
In: Particle and Particle Systems Characterization (2021)
DOI: 10.1002/ppsc.202100098

 

 

[71]     Müssig S., Reichstein J., Prieschl J., Wintzheimer S., Mandel K.
A Single Magnetic Particle with Nearly Unlimited Encoding Options
In: Small (2021)
DOI: 10.1002/smll.202101588

 

 

[70]     Müssig S., Kuttich B., Fidler F., Haddad D., Wintzheimer S., Kraus T., Mandel K.
Reversible magnetism switching of iron oxide nanoparticle dispersions
by controlled agglomeration
In: Nanoscale Advances 3 (2021), p. 2822-2829
DOI: 10.1039/d1na00159k

 

 

[69]     Oppmann M., Wenderoth S., Ballweg T., Schug B., Mandel K.
A Simple Model Setup Using Spray-Drying Principles and Fluorescent Silica Nanoparticles to Evaluate the Efficiency of Facemask Materials in Terms of Virus Particle Retention
In: Advanced Materials Technologies (2021)
DOI: 10.1002/admt.202100235

 

 

[68]     Wolf A., Flegler A., Prieschl J., Stuebinger T., Witt W., Seiser F., Vinnay T., Sinn T., Gleiß M., Nirschl H., Mandel K.
Centrifugation based separation of lithium iron phosphate (LFP) and carbon black for lithium-ion battery recycling
In: Chemical Engineering and Processing 160 (2021), Article No.: 108310
DOI: 10.1016/j.cep.2021.108310

 

 

[67]      Wintzheimer S., Reichstein J., Groppe P., Wolf A., Fett B., Zhou H., Pujales Paradela R., Miller F., Müssig S., Wenderoth S., Mandel K.
Supraparticles for Sustainability
In: Advanced Functional Materials (2021)
DOI: 10.1002/adfm.202011089

 

 

[66]     Naya R.S., Stepanenko V., Mandel K., Beuerle F.
Modulation of Crystallinity and Optical Properties in Composite Materials Combining Iron Oxide Nanoparticles and Dye-Containing Covalent Organic Frameworks
In: Organic Materials (2021)
DOI: 10.1055/s-0040-1722655

 

 

[65]     Granath T., Loebmann P., Mandel K.
Oxidative Precipitation as a Versatile Method to Obtain Ferromagnetic Fe3O4 Nano- and Mesocrystals Adjustable in Morphology and Magnetic Properties
In: Particle & Particle Systems Characterization (2021)
DOI: 10.1002/ppsc.202000307

 

[64]     Miller F., Wintzheimer S., Prieschl J., Strauss V., Mandel K.
A Supraparticle-Based Five-Level-Identification Tag That Switches Information Upon Readout
In: Advanced Optical Materials (2020)
DOI: 10.1002/adom.202001972

 

 

[63]      Seuffert MT., Wintzheimer S., Oppmann M., Granath T., Prieschl J., Alrefai A., Holdt HJ., Müller-Buschbaum K., Mandel K.
An all white magnet by combination of electronic properties of a white light emitting MOF with strong magnetic particle systems
In: Journal of Materials Chemistry C 8 (2020), p. 16010-16017
DOI: 10.1039/d0tc03473h

 

 

[62]     Wenderoth S., Granath T., Prieschl J., Wintzheimer S., Mandel K.
Abrasion Indicators for Smart Surfaces Based on a Luminescence Turn‐On Effect in Supraparticles
In: Advanced Photonics Research 1 (2020), p. 2000023
DOI: 10.1002/adpr.202000023

 

 

[61]      Tschoepe A., Wyrwoll M., Schneider M., Mandel K., Franzreb M.
A magnetically induced fluidized-bed reactor for intensification of electrochemical reactions
In: Chemical Engineering Journal 385 (2020), Article No.: 123845
DOI: 10.1016/j.cej.2019.123845

 

 

 

[60]     Schneider M., Tschoepe A., Hanselmann D., Ballweg T., Cehermann C., Franzreb M., Mandel K.
Adsorber Particles with Magnetically-Supported Improved Electrochemical Conversion Behavior for Waste Water Treatment Processes
In: Particle & Particle Systems Characterization 37 (2020), Article No.: 1900487
DOI: 10.1002/ppsc.201900487

 

 

[59]     Tschöpe A., Heikenwälder S., Schneider M., Mandel K., Franzreb M.
Electrical conductivity of magnetically stabilized fluidized-bed electrodes – Chronoamperometric and impedance studies
In: Chemical Engineering Journal 396 (2020), Article No.: 125326
DOI: 10.1016/j.cej.2020.125326

 

 

[58]     Miller F., Wintzheimer S., Reuter T., Groppe P., Prieschl J., Retter M., Mandel K.
Luminescent Supraparticles Based on CaF2-Nanoparticle Building Blocks as Code Objects with Unique IDs
In: ACS Applied Nano Materials 3 (2020), p. 734-741
DOI: 10.1021/acsanm.9b02245

 

 

[57]     Pannek C., Vetter T., Oppmann M., Weber C., Eberhardt A., Dold M., Bauersfeld ML., Henfling M., Trupp S., Schug B., Woellenstein J., Mandel K.
Highly sensitive reflection based colorimetric gas sensor to detect CO in realistic fire scenarios
In: Sensors and Actuators B-Chemical 306 (2020), Article No.: 127572
DOI: 10.1016/j.snb.2019.127572

 

[56]     Wintzheimer S., Miller F., Prieschl J., Retter M., Mandel K.
Supraparticles with silica protection for redispersible, calcined nanoparticles
In: Nanoscale Advances 1 (2019), p. 4277-4281
DOI: 10.1039/c9na00442d

 

 

[55]     Wintzheimer S., Müssig S., Wenderoth S., Prieschl J., Granath T., Fidler F., Haddad D., Mandel K.
Hollow Superparamagnetic Nanoparticle-Based Microballoons for Mechanical Force Monitoring by Magnetic Particle Spectroscopy
In: ACS Applied Nano Materials 2 (2019), p. 6757-6762
DOI: 10.1021/acsanm.9b01693

 

 

[54]     Wintzheimer S., Oppmann M., Dold M., Pannek C., Bauersfeld ML., Henfling M., Trupp S., Schug B., Mandel K.
Indicator Supraparticles for Smart Gasochromic Sensor Surfaces Reacting Ultrafast and Highly Sensitive
In: Particle & Particle Systems Characterization 36 (2019), Article No.: 1900254
DOI: 10.1002/ppsc.201900254

 

 

[53]     Müssig S., Granath T., Schembri T., Fidler F., Haddad D., Hiller KH., Wintzheimer S., Mandel K.
Anisotropic Magnetic Supraparticles with a Magnetic Particle Spectroscopy Fingerprint as Indicators for Cold-Chain Breach
In: ACS Applied Nano Materials 2 (2019), p. 4698-4702
DOI: 10.1021/acsanm.9b00977

 

 

[52]     Muendlein M., Schug B., Wintzheimer S., Mandel K.
Facile synthesis of magnetic nanoparticles optimized towards high heating rates upon magnetic induction
In: Journal of Magnetism and Magnetic Materials 488 (2019), Article No.: 165350
DOI: 10.1016/j.jmmm.2019.165350

 

 

[51]     Müssig S., Fidler F., Haddad D., Hiller KH., Wintzheimer S., Mandel K.
Supraparticles with a Magnetic Fingerprint Readable by Magnetic Particle Spectroscopy: An Alternative beyond Optical Tracers
In: Advanced Materials Technologies 4 (2019), Article No.: 1900300
DOI: 10.1002/admt.201900300

 

 

[50]     Schneider M., Ballweg T., Gross L., Cellermann C., Sanchez-Sanchez A., Fierro V., Ceizard A., Mandel K.
Magnetic Carbon Composite Particles for Dye Adsorption from Water and their Electrochemical Regeneration
In: Particle & Particle Systems Characterization 36 (2019), Article No.: 1800537
DOI: 10.1002/ppsc.201800537

 

 

Cover[49]     Wintzheimer S., Reichstein J., Wenderoth S., Hasselmann S., Oppmann M., Seuffert MT., Mueller-Buschbaum K., Mandel K.
Expanding the Horizon of Mechanochromic Detection by Luminescent Shear Stress Sensor Supraparticles
In: Advanced Functional Materials 29 (2019), Article No.: 1901193
ISSN: 1616-301X
DOI: 10.1002/adfm.201901193

 

 

[48]     Wintzheimer S., Granath T., Eppinger A., Goncalves MR., Mandel K.
A code with a twist: Supraparticle microrod composites with direction dependent optical properties as anti-counterfeit labels
In: Nanoscale Advances 1 (2019), p. 1510-1515
ISSN: 2516-0230
DOI: 10.1039/c8na00334c

 

 

[47]     Celzard A., Pasc A., Schaefer S., Mandel K., Ballweg T., Li S., Medjandi G., Nicolas ., Fierro .
Floating hollow carbon spheres for improved solar evaporation
In: Carbon 146 (2019), p. 232-247
DOI: 10.1016/j.carbon.2019.01.101

 

 

[46]     Oppmann M., Wozar M., Reichstein J., Mandel K.
Reusable Superparamagnetic Raspberry-Like Supraparticle Adsorbers as Instant Cleaning Agents for Ultrafast Dye Removal from Water
In: ChemNanoMat 5 (2019), p. 230-240
DOI: 10.1002/cnma.201800490

 

[45]     Stauch C., Süß S., Luxenhofer R., Binks BP., Segets D., Mandel K.
Quantifying Surface Properties of Silica Particles by Combining Hansen Parameters and Reichardt’s Dye Indicator Data
In: Particle & Particle Systems Characterization 35 (2018), Article No.: 1800328
DOI: 10.1002/ppsc.201800328

 

 

[44]     Rott E., Nouri M., Meyer C., Minke R., Schneider M., Mandel K., Drenkova-Tuhtan A.
Removal of phosphonates from synthetic and industrial wastewater with reusable magnetic adsorbent particles
In: Water Research 145 (2018), p. 608-617
DOI: 10.1016/j.watres.2018.08.067

 

 

[43]     Wintzheimer S., Szczerba W., Buzanich AG., Kashiwaya S., Klein A., Jaegermann W., Toupance T., Shmeliov A., Nicolosi V., Heuze K., Mandel K., Dembski S.
Discovering the Determining Parameters for the Photocatalytic Activity of TiO2 Colloids Based on an Anomalous Dependence on the Specific Surface Area
In: Particle & Particle Systems Characterization 35 (2018), Article No.: 1800216
DOI: 10.1002/ppsc.201800216

 

 

[42]     Stumm C., Szielasko K., Granath T., Stauch C., Mandel K.
Raspberry-like supraparticles from nanoparticle building-blocks as code-objects for hidden signatures readable by terahertz rays
In: Materials Today Communications 16 (2018), p. 174-177
DOI: 10.1016/j.mtcomm.2018.05.011

 

 

[41]     Stauch C., Ballweg T., Haas KH., Jaeger R., Stiller S., Shmeliov A., Nicolosi V., Malebennur S., Woetzel J., Beiner M., Luxenhofer R., Mandel K.
Silanization of Silica Nanoparticles and Their Processing as Nanostructured Micro-Raspberry Powders—A Route to Control the Mechanical Properties of Isoprene Rubber Composites
In: Polymer Composites 40 (2019), p. E732-E743
DOI: 10.1002/pc.24980

 

 

[40]     Wintzheimer S., Granath T., Oppmann M., Kister T., Thai T., Kraus T., Vogel N., Mandel K.
Supraparticles: Functionality from Uniform Structural Motifs
In: ACS nano 12 (2018), p. 5093-5120
DOI: 10.1021/acsnano.8b00873

 

 

[39]     Stauch C., Hobbs C., Shmeliov A., Nicolosi V., Ballweg T., Luxenhofer R., Mandel K.
Colloidal Core–Satellite Supraparticles via Preprogramed Burst of Nanostructured Micro-Raspberry Particles
In: Particle & Particle Systems Characterization 35 (2018), Article No.: 1800096
DOI: 10.1002/ppsc.201800096

 

 

[38]     Koch I., Granath T., Hess S., Ueltzhoeffer T., Deumel S., Caballero CIJ., Ehresmann A., Holzinger D., Mandel K.:
Smart Surfaces: Magnetically Switchable Light Diffraction through Actuation of Superparamagnetic Plate-Like Microrods by Dynamic Magnetic Stray Field Landscapes
In: Advanced Optical Materials 6 (2018), Article No.: 1800133
DOI: 10.1002/adom.201800133

 

 

[37]     Oppmann M., Miller F., Thuerauf S., Groppe P., Prieschl J., Stauch C., Mandel K.
Core-Satellite Supraparticles to Ballistically Stamp Nanostructures on Surfaces
In: ACS Applied Materials and Interfaces 10 (2018), p. 14183-14192
DOI: 10.1021/acsami.8b02404

 

 

[36]     Ballweg T., Von Daake H., Hanselmann D., Stephan D., Mandel K., Sextl G.
Versatile triggered substance release systems via a highly flexible high throughput encapsulation technique
In: Applied Materials Today 11 (2018), p. 231-237
DOI: 10.1016/j.apmt.2018.02.010

 

 

[35]     Schug B., Mandel K., Schottner G., Shmeliov A., Nicolosi V., Baese R., Foerthner S., Pietschmann B., Biebl M., Sextl G.
Revealing the working principle of sodium trimetaphosphate as state of the art anti-creep agent in gypsum plaster
In: Cement and Concrete Research 107 (2018), p. 182-187
DOI: 10.1016/j.cemconres.2018.02.025

 

 

[34]     Hobbs C., Jaskaniec S., Mccarthy EK., Downing C., Opelt K., Guth K., Shmeliov A., Mourad MCD., Mandel K., Nicolosi V.
Structural transformation of layered double hydroxides: an in situ TEM analysis
In: npj 2D Materials and Applications 2 (2018), Article No.: 4
DOI: 10.1038/s41699-018-0048-4

 

[33]     Flegler A., Hartmann S., Settelein J., Mandel K., Sextl G.
Screen printed bifunctional gas diffusion electrodes for aqueous metal-air batteries: Combining the best of the catalyst and binder world
In: Electrochimica Acta 258 (2017), p. 495-503
DOI: 10.1016/j.electacta.2017.11.088

 

 

[32]     Szczerba W., Schneider M., Zukrowski J., Buzanich AG., Riesemeier H., Sikora M., Mandel K.
Spectroscopic Study of the Role of Metal Ions in the Adsorption Process of Phosphate in Nanoscaled Adsorbers Based on Metal (Zn/Fe/Zr) Oxyhydroxides
In: Journal of Physical Chemistry C 121 (2017), p. 25033-25042
DOI: 10.1021/acs.jpcc.7b04773

 

 

[31]     Wehner T., Seuffert MT., Sorg JR., Schneider M., Mandel K., Sextl G., Mueller-Buschbaum K.
Composite materials combining multiple luminescent MOFs and superparamagnetic microparticles for ratiometric water detection
In: Journal of Materials Chemistry C 5 (2017), p. 10133-10142
DOI: 10.1039/c7tc03312e

 

 

Cover[30]     Stauch C., Spaeth S., Ballweg T., Luxenhofer R., Mandel K.
Nanostructured micro-raspberries from superparamagnetic iron oxide nanoparticles: Studying agglomeration degree and redispersibility of nanoparticulate powders via magnetisation measurements
In: Journal of Colloid and Interface Science 505 (2017), p. 605-614
DOI: 10.1016/j.jcis.2017.06.047

 

 

[29]     Schug B., Mandel K., Schottner G., Shmeliov A., Nicolosi V., Baese R., Pietschniann B., Blebl M., Sextl G.
A mechanism to explain the creep behavior of gypsum plaster
In: Cement and Concrete Research 98 (2017), p. 122-129
DOI: 10.1016/j.cemconres.2017.04.012

 

 

[28]     Flegler A., Muessig S., Prieschl J., Mandel K., Sextl G.
Towards core-shell bifunctional catalyst particles for aqueous metal-air batteries: NiFe-layered double hydroxide nanoparticle coatings on gamma-MnO2 microparticles
In: Electrochimica Acta 231 (2017), p. 216-222
DOI: 10.1016/j.electacta.2017.01.179

 

 

[27]     Mandel K., Granath T., Wehner T., Rey M., Stracke W., Vogel N., Sextl G., Mueller-Buschbaum K.
Smart Optical Composite Materials: Dispersions of Metal-Organic Framework@Superparamagnetic Microrods for Switchable Isotropic-Anisotropic Optical Properties
In: Acs Nano 11 (2017), p. 779-787
DOI: 10.1021/acsnano.6b07189

 

 

[26]     Schneider M., Drenkova-Tuhtan A., Szczerba W., Gellermann C., Meyer C., Steinmetz H., Mandel K., Sextl G.
Nanostructured ZnFeZr oxyhydroxide precipitate as efficient phosphate adsorber in waste water: understanding the role of different material-building-blocks
In: Environmental Science: Nano 4 (2017), p. 180-190
DOI: 10.1039/C6EN00507A

 

 

[25]     Stauch C., Ballweg T., Stracke W., Luxenhofer R., Mandel K.
Burstable nanostructured micro-raspberries: Towards redispersible nanoparticles from dry powders
In: Journal of Colloid and Interface Science 490 (2017), p. 401-409
DOI: 10.1016/j.jcis.2016.11.047

 

 

[24]     Drenkova-Tuhtan A., Schneider M., Franzreb M., Meyer C., Gellermann C., Sextl G., Mandel K., Steinmetz H.
Pilot-scale removal and recovery of dissolved phosphate from secondary wastewater effluents with reusable ZnFeZr adsorbent @ Fe3O4/SiO2 particles with magnetic harvesting
In: Water Research 109 (2017), p. 77-87
DOI: 10.1016/j.watres.2016.11.039

 

[23]     Granath T., Sanchez-Sanchez A., Shmeliov A., Nicolosi V., Fierro V., Celzard A., Mandel K.
Hollow Superparamagnetic Microballoons from Lifelike, Self-Directed Pickering Emulsions Based on Patchy Nanoparticles
In: ACS nano 10 (2016), p. 10347-10356
DOI: 10.1021/acsnano.6b06063

 

 

[22]     Szczerba W., Zukrowski J., Przybylski M., Sikora M., Safonova O., Shmeliov A., Nicolosi V., Schneider M., Granath T., Oppmann M., Strasser M., Mandel K.
Pushing up the magnetisation values for iron oxide nanoparticles: Via zinc doping: X-ray studies on the particle’s sub-nano structure of different synthesis routes
In: Physical Chemistry Chemical Physics 18 (2016), p. 25221-25229
DOI: 10.1039/c6cp04221j

 

 

[21]     Flegler A., Schneider M., Prieschl J., Stevens R., Vinnayd T., Mandel K.
Continuous flow synthesis and cleaning of nano layered double hydroxides and the potential of the route to adjust round or platelet nanoparticle morphology
In: RSC Advances 6 (2016), p. 57236-57244
DOI: 10.1039/c6ra09553d

 

 

[20]     Szielasko K., Youssef A., Sporn D., Mandel K.
Fingerprint signatures based on nanomagnets as markers in materials for tracing and counterfeit protection
In: Journal of Nanoparticle Research 18 (2016), Article No.: 131
DOI: 10.1007/s11051-016-3443-9

 

 

[19]     Koch S., Kessler M., Mandel K., Dembski S., Heuze K., Hackenberg S.
Polycarboxylate ethers: The key towards non-toxic TiO2 nanoparticle stabilisation in physiological solutions
In: Colloids and Surfaces B: Biointerfaces 143 (2016), p. 7-14
DOI: 10.1016/j.colsurfb.2016.03.010

 

 

[18]     Wehner T., Mandel K., Schneider M., Sextl G., Mueller-Buschbaum K.
Superparamagnetic Luminescent MOF@Fe3O4/SiO2 Composite Particles for Signal Augmentation by Magnetic Harvesting as Potential Water Detectors
In: ACS Applied Materials and Interfaces 8 (2016), p. 5445-5452
DOI: 10.1021/acsami.5b11965

 

 

[17]     Bychanok D., Li S., Sanchez-Sanchez A., Gorokhov G., Kuzhir P., Ogrin FY., Pasc A., Ballweg T., Mandel K., Szczurek A., Fierro V., Celzard A.
Hollow carbon spheres in microwaves: Bio inspired absorbing coating
In: Applied Physics Letters 108 (2016), Article No.: 013701
DOI: 10.1063/1.4938537

 

 

[16]     Drenkova-Tuhtan A., Schneider M., Mandel K., Meyer C., Gellermann C., Sextl G., Steinmetz H.
Influence of cation building blocks of metal hydroxide precipitates on their adsorption and desorption capacity for phosphate in wastewater-A screening study
In: Colloids and Surfaces A-Physicochemical and Engineering Aspects 488 (2016), p. 145-153
DOI: 10.1016/j.colsurfa.2015.10.017

 

[15]     Wintzheimer S., Spaeth S., Shmeliov A., Nicolosi V., Mandel K.
Air bubble promoted large scale synthesis of luminescent ZnO nanoparticles
In: Journal of Materials Chemistry C 3 (2015), p. 12430-12435
DOI: 10.1039/c5tc03107a

 

 

[14]     Ballweg T., Gellermann C., Mandel K.
Coatings with a Mole-hill Structure of Nanoparticle-Raspberry Containers for Surfaces with Abrasion-Refreshable Reservoir Functionality
In: ACS Applied Materials and Interfaces 7 (2015), p. 24909-24914
DOI: 10.1021/acsami.5b08380

 

[13]    Brede FA., Mandel K., Schneider M., Sextl G., Mueller-Buschbaum K.
Mechanochemical surface functionalisation of superparamagnetic microparticles with in situ formed crystalline metal-complexes: A fast novel core-shell particle formation method
In: Chemical Communications 51 (2015), p. 8687-8690
DOI: 10.1039/c5cc01961c

 

 

[12]    Mandel K., Strasser M., Granath T., Dembski S., Sextl G.
Surfactant free superparamagnetic iron oxide nanoparticles for stable ferrofluids in physiological solutions
In: Chemical Communications 51 (2015), p. 2863-2866
DOI: 10.1039/c4cc09277e

 

[11]     Mandel K., Kolb C., Strasser M., Dembski S., Sextl G.:
Size controlled iron oxide nano octahedra obtained via sonochemistry and natural ageing
In: Colloids and Surfaces A-Physicochemical and Engineering Aspects 457 (2014), p. 27-32
DOI: 10.1016/j.colsurfa.2014.05.046

 

[10]     Drenkova-Tuhtan A., Mandel K., Paulus A., Meyer C., Hutter F., Gellermann C., Sextl G., Franzreb M., Steinmetz H.:
Phosphate recovery from wastewater using engineered superparamagnetic particles modified with layered double hydroxide ion exchangers
In: Water Research 47 (2013), p. 5670-5677
DOI: 10.1016/j.watres.2013.06.039

 

 

[9]     Mandel K., Hutter F., Gellermann C., Sextl G.:
Reusable superparamagnetic nanocomposite particles for magnetic separation of iron hydroxide precipitates to remove and recover heavy metal ions from aqueous solutions
In: Separation and Purification Technology 109 (2013), p. 144-147
DOI: 10.1016/j.seppur.2013.03.002

 

 

[8]     Mandel K., Hutter F., Gellermann C., Sextl G.:
Stabilisation effects of superparamagnetic nanoparticles on clustering in nanocomposite microparticles and on magnetic behaviour
In: Journal of Magnetism and Magnetic Materials 331 (2013), p. 269-275
DOI: 10.1016/j.jmmm.2012.11.053

 

 

[7]     Mandel K., Drenkova-Tuhtan A., Hutter F., Gellermann C., Steinmetz H., Sextl G.:
Layered double hydroxide ion exchangers on superparamagnetic microparticles for recovery of phosphate from waste water
In: Journal of Materials Chemistry A 1 (2013), p. 1840-1848
DOI: 10.1039/c2ta00571a

 

[6]     Mandel K., Hutter F., Gellermann C., Sextl G.:
Modified superparamagnetic nanocomposite microparticles for highly selective Hg II or Cu II separation and recovery from aqueous solutions
In: ACS Applied Materials and Interfaces 4 (2012), p. 5633-5642
DOI: 10.1021/am301910m

 

 

[5]     Mandel K., Hutter F.:
The magnetic nanoparticle separation problem
In: Nano Today 7 (2012), p. 485-487
DOI: 10.1016/j.nantod.2012.05.001

 

 

[4]     Mandel K., Szczerba W., Thuenemann AF., Riesemeier H., Girod M., Sextl G.:
Nitric acid-stabilized superparamagnetic iron oxide nanoparticles studied with X-rays
In: Journal of Nanoparticle Research 14 (2012), Article No.: 1066
DOI: 10.1007/s11051-012-1066-3

 

 

[3]     Mandel K., Dillon F., Koos AA., Aslam Z., Cullen F., Bishop H., Crossley A., Grobert N.:
Customised transition metal oxide nanoparticles for the controlled production of carbon nanostructures
In: RSC Advances 2 (2012), p. 3748-3752
DOI: 10.1039/c2ra01324j

 

[2]     Mandel K., Hutter F., Gellermann C., Sextl G.:
Synthesis and stabilisation of superparamagnetic iron oxide nanoparticle dispersions
In: Colloids and Surfaces A-Physicochemical and Engineering Aspects 390 (2011), p. 173-178
ISSN: 0927-7757
DOI: 10.1016/j.colsurfa.2011.09.024

 

 

[1]     Mandel K., Dillon F., Koos AA., Aslam Z., Jurkschat K., Cullen F., Crossley A., Bishop H., Moh K., Cavelius C., Arzt E., Grobert N.:
Facile, fast, and inexpensive synthesis of monodisperse amorphous Nickel-Phosphide nanoparticles of predefined size
In: Chemical Communications 47 (2011), p. 4108-4110
ISSN: 1359-7345
DOI: 10.1039/c0cc02769c

There are currently 14 patent applications on all topics of the group. For further details, please contact Karl Mandel directly.

Flegler A., Koch S., Schneider M., Gellermann C.,  Mandel K.*
Tailored nanoparticles by wet chemical particle technology: from lab to pilot scale
In: Handbook of Nanomaterials for Industrial Applications (2018), Chaudhery Mustansar Hussain (Ed.), Elsevier, Amsterdam,
ISBN: 978-0-12-813351-4

Mandel K.*
Complex superparamagnetic particle architectures and their versatile applicability
In: Produktgestaltung in der Partikeltechnologie Band 8 (2017), Ulrich Teipel, Michael Türk (Ed.), Fraunhofer Verlag, Stuttgart
(ISBN 978-3-8396-1194-4)

Posters:

Wolf A., Flegler A., Stübinger T., Witt W., Seiser F., Vinnay T., Sinn T.,Gleiß M., Mandel K.
A novel centrifugation-based low temperature recycling strategy for lithium-ion battery active materials
Batterieforum Deutschland 2020 (Berlin, Germany)

Müssig S., Fidler F., Haddad D., Wintzheimer S., Mandel K.
A universal marking technology: Supraparticles with magnetic fingerprints readable by magnetic particle spectroscopy
Particle Based Materials Symposium 2019 (Ulm, Germany)

Wenderoth S., Reichstein J., Wintzheimer S., Mandel K.
Mechanochromic shear sensors based on supraparticles
Particle Based Materials Symposium 2019 (Ulm, Germany)

Müssig S., Miller F., Wenderoth S., Reuter T., Reichstein J., Groppe P., Prieschl J., Granath T., Wintzheimer S., Mandel K.
NANO-ID: Nanoparticle based supraparticles with a unique fingerprint as markers and tracers
Chem-SyStM 2018 (Würzburg, Germany)

Granath T., Wehner T., Koch I., Rey M., Eppinger A., Holzinger D., Wintzheimer S., Ehresmann A., Vogel N., Müller-Buschbaum K., Mandel K.
Magnetic supraparticle microrods from superparamagnetic nanoparticles:
a magnetically switchable material with versatile optical properties
Chem-SyStM 2018 (Würzburg, Germany)
Best Poster Award

Schug B., Stauch C.,Oppmann M., Mandel K.
Supraparticles from spray-dried nanoparticles as interactive agents for surfaces
Conference on Coatings on Glass and Plastics 2018 (Würzburg, Germany)
Best Poster Award

Stauch C., Ballweg T., Stracke W., Späth S., Luxenhofer R., Mandel K.
Nanostructured micro-raspberry powders: towards easily redispersible nanoparticles
Symposium “Produktgestaltung in der Partikeltechnologie” 2016 (Karlsruhe, Germany)

Mandel K.
Complex nanostructured particles by design
The Particle Technology Group (Karl Mandel)
Chem-SyStM 2016 (Würzburg, Germany)

Mandel K.
Complex nanostructured composite microparticles from nanomagnets
The Particle Technology Group (Karl Mandel)
PARTEC 2016 (Nürnberg, Germany)

Straßer M., Dembski S., Mandel K., Schrauth J., Haddad D., Ahrens B., Schweizer S., Walles H.
Multifunctional Nanoparticles for Medical Imaging
Forum Life Science 2015 (München, Germany)

Straßer M., Dembski S., Mandel K., Schrauth J., Haddad D., Ahrens B., Schweizer S., Walles H.
Multifunctional Nanoparticles for Medical Imaging
BioNanoMed 2015 (Graz, Austria)

Straßer M., Dembski S., Mandel K., Schrauth J., Haddad D., Ahrens B, Schweizer S., Walles H.
Multifunctional Nanoparticles for Medical Imaging
4th International Conference Strategies in Tissue Engineering 2015 (Würzburg, Germany)

Straßer M., Mandel K., Kolb C., Dembski S.
Size controlled iron oxide nano octahedra obtained via sonochemistry and natural ageing
Nanobio Europe Conference 2014 (Münster, Germany)

Mandel K., Hutter F., Gellermann C., Sextl G.
Superparamagnetic Magnetite Nanoparticles for Ferrofluids and Magnetic Beads
Chem-SyStM 2012 (Würzburg, Germany)

Mandel K., Hutter F., Gellermann C., Sextl G.
Superparamagnetic Magnetite Nanoparticles for Ferrofluids and Magnetic Beads
Junior EuroMat 2012 (Lausanne, Switzerland)

Mandel K., Dillon F., Koos A., Grobert N.
Fast and simple size controlled synthesis of metallic catalyst nanoparticles for carbon nanotube growth
NanoteC10 2010 (Oxford, UK)

Talk (Plenary, invited)
Mandel K.
Nano 2.0: Supraparticles – and how these make materials smart and contribute to sustainability
Mendeleev 2021, St. Petersburg (hybrid), September 2021

Talk
Mandel K.
Communicating particles for sustainability
GDCh Science Forum Chemistry (Wissenschaftsforum Chemie), online, August 2021

Talk (Keynote)
Mandel K.
Supraparticles for sustainability – a fundamental overview
KIC SafeVulca Workshop, online, April 2021

Talk
Mandel K.
Supraparticles – new functionalities via assembly of long known colloidal building blocks to complex particulate entities
10th International Colloids Conference, online, December 2020

Talk
Mandel K.
Advanced materials by “nano 2.0”
Spray-drying of nanoparticles to assemble supraparticles with unique properties
Büchi webinar, online, November 2020

Talk
Mandel K.
Functional supraparticles – based on iron oxide and silica nanoparticles
Abschlusskolloquium Habilitationsverfahren
Julius-Maximilians-University, Würzburg, Germany, March 2020

Talk
Mandel K.
Supraparticles: new functionalitites from building complex entitites using colloidal building blocks
29th ATC Industrial Inorganic Chemistry Conference,
Frankfurt, Germany, February 2020

Talk (invited)
Mandel K.
Supraparticles by spray-drying
Hiroshima University, Hiroshima, Japan, January 2020

Talk
Mandel K.
“Nanotechnology 2.0”:  Generating supraparticles via spray-drying
Büchi, Flawil, Switzerland, January 2020

Talk (invited)
Mandel K.
Supraparticles – particles, made from particles, with unexpected functionalitites
AC-Kolloquium, Universität Leipzig, Leipzig, Germany, December 2019

Talk (invited)
Mandel K.
More than nano: Supraparticulate systems
Fraunhofer Nano Allianz meeting, Würzburg, Germany, November 2019

Talk (invited, plenary)
Mandel K.
Particle technology from lab to pilot scale and nanotechnology 2.0 with supraparticles
Nanotechnology crossing borders, Hasselt, Belgium, September 2019

Talk
Mandel.K
The NANO-ID project
BMBF NanoMatFutur Netzwerktreffen, Saarbrücken, Germany, September 2019

Talk
Mandel K.
Supraparticles – there is plenty of room at the supra-nano-level
6th NanoToday conference, Lissbon, Portugal, June 2019

Talk
Mandel K.
Nanostructured micro-raspberry supraparticles with triggerable burst behavior to create polymer composites and smart coatings
Netzwerktreffen Süddeutsches Kunststoffzentrum, Würzburg, Germany, May 2019

Talk (invited)
Mandel K.
From classical particle technology to supraparticles
Fraunhofer IKTS, Dresden, Germany, April 2019

Talk
Mandel K.
Supraparticles – new functionalities with long-known nanoparticle building blocks
ADUC, Koblenz, Germany, March 2019

Talk (invited)
Mandel K.
Supraparticles: Particles made from nano building blocks and the role of interfaces in these complex entities
ProcessNet-Fachgruppenjahrestreffen Grenzflächenbestimmte Systeme und Prozesse, Bamberg, Germany, March 2019

Talk (invited)
Mandel K.
Supraparticles – there is plenty of room at the supra-nano-level
TU Ilmenau, Ilmenau, Germany, December 2018

Talk (invited)
Mandel K.
Supraparticles – there is plenty of room at the supra-nano-level
For the board of trustees at the Fraunhofer ISC, Würzburg, Germany, November 2018

Talk (invited)
Mandel K.
Particle Technology in Würzburg – Colloidal engineering and supraparticle research
Dechema Fachgruppe Nanotechnologie, October 2018

Talk
Mandel K.
Supraparticles – complex particles as smart objects for interactive materials and processes
Smart Materials and Surfaces SMS International Conf., Venice, Italy, October 2018

Talk
Mandel K.
From wet-chemical synthesis of superparamagnetic nanoparticles to functional supraparticle architectures
MSE International Conf., Darmstadt, Germany, September 2018

Talk and session chair
Mandel K.
Supraparticles: A suggestion to define the term and an outline on how they can be made and what they are good for
Particle-based Materials Symposium, Erlangen, Germany, September 2018

Talk
Mandel K.
Functional superparamagnetic supraparticles and their application towards water treatment and smart surfaces
ProcessNet Jahrestagung, Aachen, Germany, September 2018

Talk
Mandel K.
The NANO-ID project
BMBF NanoMatFutur Netzwerktreffen, Bonn, Germany, September 2018

Talk
Mandel K.
Supraparticles – complex particles as additives for new properties in advanced materials
RSC Symposium at ChemSpec Europe, Köln, Germany, June 2018

Talk (Keynote lecture) and invited session chair
Mandel K.
Synthesis and processing of tailored nanoparticles by wet chemical particle technology:
from lab to pilot scale
ACHEMA – World Forum and Leading Show for the Process Industries 2018, Frankfurt, Germany, June 2018

Talk
Mandel K.
Functional supraparticles from nanoparticles – synthesis methods and potential applications
Dechema Jahrestreffen Reaktionstechnik 2018, Würzburg, Germany, May 2018

Talk
Mandel K.
NANOSTRAHL: Supraparticles for Sandblasting
Kärcher Innovation Award, Winnenden, Germany, December 2017

Talk (Slam/Pitch)
Mandel K.
The Nanoparticle Kitchen
Fraunhofer Alumni Summit, Stuttgart, Germany, November 2017

Talk and session chair
Mandel K.
Functional supraparticles from iron oxide based nano-building-blocks
Particle-based Materials Symposium, Saarbrücken, Germany, November 2017

Talk
Mandel K.
Functional superparamagnetic supraparticles: from magnetic nanoparticles to optically interactive dispersions
International Congress Engineering of Advanced Materials ICEAM2017, Erlangen, Germany, October 2017

Talk
Mandel K.
Functional supraparticles from nano-building-blocks-spotlight on iron oxide and silica based systems
ETH Zürich, Zürich, Switzerland, September 2017

Talk (invited)
Mandel K.
Iron oxide and silica: not just boring rust and sand but building-block for fascinating functional nanostructures
Tagung Innovation durch funktionale Rohstoffe, Oftringen, Switzerland, September 2017

Talk
Mandel K.
Complex superparamagnetic particle architectures and their versatile applicability
Symposium Produktgestaltung in der Partikeltechnologie, Karlsruhe, Germany, June 2017

Talk
Mandel K.
Nanostructured micro-raspberry powders: Towards easily redispersible nanoparticles
Dispersion Days, Selb, Germany, May 2017

Talk
Mandel K.
Superparamagnetic carrier particles for water purification, resources recovery and substance sensing in fluids
253rd American Chemical Society National Meeting, San Francisco, USA, April 2017

Talk
Mandel K.
Tailored nanoparticles by wet chemical particle technology – from lab to pilot scale
253rd American Chemical Society National Meeting, San Francisco, USA, April 2017

Talk
Mandel K.
Layered Double Hydroxides (LDH) as Multifunctional Nano-agents with Potential as Flame Retardant
Trends in Fire Safety Conference, SKZ, Würzburg, Germany, March 2017

Talk
Mandel K.
Complex superparamagnetic particle architectures and their versatile applicability
7th Nano.NRW Conference, Münster, Germany, December 2016

Talk
Mandel K.
Complex particles: Particles from nano-building-blocks
Particle-based Materials Workshop, Würzburg, Germany, November 2016

Talk (invited)
Mandel K.
Colloidal engineering and synthesis of complex nanoparticle entities
CENIDE, University Duisburg-Essen, Duisburg, Germany, November 2016

Talk (invited)
Mandel K.
Colloidal engineering and synthesis of complex nanoparticle entities
Trinity College Dublin, Dublin, Ireland, August 2016

Talk
Mandel K.
The nanoparticle kitchen approach
Nanoparticle Kitchen Workshop, Würzburg, Germany, July 2016

Talk
Mandel K.
Tailored nanoparticles by wet chemical particle technology: from lab to pilot scale
PARTEC, Nürnberg, Germany, April 2016

Talk (invited)
Mandel K.
Particle technology at Fraunhofer ISC and examples of current research in the field of magnetic and complex particles
Université de Lorraine / CNRS, Nancy, France, March 2016

Talk (invited)
Mandel K.
Towards flexible pilot scale synthesis of high precision nanoparticles in dispersion
Industrielle Produktion von Nanomaterialien – Stand und aktuelle Herausforderungen, DECHEMA, Frankfurt, Germany, February 2016

Talk (invited)
Mandel K.
Superparamagnetic particles and their application in water purification and resources recovery
Nano meets water VII, Fraunhofer UMSICHT, Oberhausen, Germany, February 2016

Talk (invited)
Mandel K.
Particle technology at Fraunhofer ISC and examples of current research in the field of magnetic particles
CBI Kolloquium Friedrich-Alexander-Universität Erlangen Nürnberg, Germany, January 2016

Talk (invited)
Mandel K.
Co-Pilot: Europe’s first pilot network for nanoparticle synthesis upscaling
National information day of NKS by VDI, PTJ, PTKA & BMBF, Düsseldorf, Germany, September 2015

Talk (invited)
Mandel K.
Nano iron oxide based particles and their versatile applicability
H2020 SME Workshop on the framework of CO-PILOT, SKZ, Würzburg, Germany June 2015

Talk (invited)
Mandel K.
Particle technology at Fraunhofer ISC and examples of current research in the field of magnetic particles
TNO, Eindhoven, The Netherlands, February 2015

Talk (invited)
Mandel K.
Magnetic nanocomposite particles for separation applications
Sol-Gel Fachkonferenz Fraunhofer ISC, Würzburg, Germany, October 2014

Talk (invited)
Mandel K.
Wet chemical synthesis of inorganic (nano)particles
Technologien zur Herstellung von Mikro- und Nanopartikeln Workshop,
Kunststoffzentrum SKZ, Selb, Germany, June 2014

Talk (invited)
Mandel K.
Magnetic carrier particles for resources recovery and water purification
Forum Waste / Secondary Raw Materials (in cooperation with Bavarian State Ministry of the Environment and Consumer Protection (StMUV)),
IFAT, Munich, Germany, Mai 2014

Talk (invited)
Mandel K.
Superparamagnetic particles and their application in water purification & resources recovery
Nanotek, Las Vegas, USA, December 2013

Talk (invited)
Mandel K.
Eisenoxid Nano(komposit)partikel und ihre Anwendungsmöglichkeiten
For the board of trustees at the Fraunhofer ISC, Würzburg, Germany, October 2013

Talk (invited)
Mandel K.
Iron oxide nano(composite)particles and their versatile applicability
EMPA, Dübendorf, Switzerland May 2012

Talk (invited)
Mandel K., Hutter F., Gellermann C., Sextl G.
Superparamagnetische Partikel für Abwasserreinigung
ProcessNet-Jahrestagung 2012 u. 30. Jahrestagung d. Biotechnologen,
Karlsruhe, Germany

Adv. Funct. Mater. 2021, 34, 2104189. Copyright Wiley-VCH Verlag GmbH & Co. KGaA. Reproduced with permission.

Particle and Particle Systems Characterization. 2021, 8, 2100098. Copyright Wiley-VCH Verlag GmbH & Co. KGaA. Reproduced with permission.

Small 2021, 28, e2101588. Copyright Wiley-VCH Verlag GmbH & Co. KGaA. Reproduced with permission.

Adv. Funct. Mater. 2021, 31, 2011089. Copyright Wiley-VCH Verlag GmbH & Co. KGaA. Reproduced with permission.

 

Cover all white magnet-1

Reproduced from J.Mater.Chem.C, 2020,8,16010 with permission from the Centre National de la Recherche Scientifique (CNRS) and The Royal Society of Chemistry.

 

Adv. Photonics Res. 2020, 1, 2000023. Copyright Wiley-VCH Verlag GmbH & Co. KGaA. Reproduced with permission.

 

Cover

Adv. Funct. Mater. 2019, 29, 1901193. Copyright Wiley-VCH Verlag GmbH & Co. KGaA. Reproduced with permission.

 

Cover

Part. Part. Syst. Charact. 2018, 35, 1800096. Copyright Wiley-VCH Verlag GmbH & Co. KGaA. Reproduced with permission.

 

Cover

Elsevier Inc., Journal of Colloid and Interface Science, 2017.

 

 

Reproduced from Journal of Materials Chemistry C, issue 39, 2017, with permission from the Royal Society of Chemistry.

Teaching

Teaching
The Supraparticle Group

Logo: The Supraparticle Group

Lectures and courses in winter semester

  • Anorganisch-analytisch-chemischer Kurs für Anfänger (CBI/LSE/CEN) [AC57]
  • Graduate seminar on supraparticle research [Grad-Supra-Sem]
  • Integrierter Kurs Insturmentelle Analytik [MSV-12N/CBV-7]
  • Seminar z. Anorgan.-Chemischen Praktikum für CBI, LSE, CEN [AC59]

 

Lectures and courses in summer semester

  • Anorganische Chemie 2 – Chemie der Metalle [AC2]
  • Graduate seminar on supraparticle research [Grad-Supra-Sem]
  • Integrierter Kurs Insturmentelle Analytik [MSV-12N/CBV-7]
  • Inorganic Chemistry [CM-IC-SS]
  • Inorganic Nanoparticles & Supraparticles [Nano-SS]

 

All slides are provided on StudOn. The password is given in the lecture or on request.

Research

Research
The Supraparticle Group

Logo: The Supraparticle Group

We assemble complex particles, so-called supraparticles, from nano building blocks.­­­
We study how the supraparticle’s structure and complex composition determines unique functionalities. With these supraparticles, we aim at creating smart materials in the field of sustainability.

Our research areas in detail:

 

Research Focus the Supraparticle Group

Icon: Nanoparticles with designed properties

Nanoparticles possess characteristic and unique physical / functional properties. Their size, shape and composition determines the ultimate properties. Chemical synthesis control enables tailoring these physical properties.­­ We synthesize and surface functionalize inorganic nanoparticles, in particularly metal oxide nanoparticles, by means of bottom-up wet chemistry and subsequently use these as building blocks to assemble functional supraparticles.­ A main interest is on magnetic, luminescent and adsorber nano building blocks.

 

Selected publications:

Icon general Supraparticle Research

We start from synthesizing inorganic nanoparticle building blocks by means of wet chemistry. Via control over the wet chemical synthesis parameters, the size, shape and composition of the nanoparticles, thus their physical properties (e.g. optical or magnetic or adsorber or catalytic properties), can be tailored. From collaboration partners, we obtain further inorganic or organic nano or molecular building blocks.

By means of spray-drying and other methods, we assemble the different building blocks to more complex entities, so-called supraparticles. We study how the assembly process can be influenced to tailor the supraparticles`s composition and structure as this determines the ultimate functional properties of the supraparticle systems.

 

Selected publications:

Icon communicating particles

One major focus of our current research is on creating supraparticles which carry a unique ID, i.e., which possess a fingerprint.
Installing an ID in one single particle is achieved by assembling supraparticles from nano building blocks with well-defined physical properties in specifically defined ratios. We do this either with optical or magnetic systems. Furthermore, we equip particles with monitoring or recording functionalities. Our ultimate aim is to create „communicating particles“ which can be employed to track processes, keep materials in use, trace material components and enable smart recycling approaches.

 

Selected publications:

Reichstein J., Miller F., Wintzheimer S., Mandel K.:
Communicating Particles: Identification Taggant and Temperature Recorder in One Single Supraparticle
In: Advanced Functional Materials (2021)
DOI: 10.1002/adfm.202104189

Müssig S., Reichstein J., Prieschl J., Wintzheimer S., Mandel K.
A Single Magnetic Particle with Nearly Unlimited Encoding Options
In: Small (2021)
DOI: 10.1002/smll.202101588

Miller F., Wintzheimer S., Reuter T., Groppe P., Prieschl J., Retter M., Mandel K.
Luminescent Supraparticles Based on CaF2-Nanoparticle Building Blocks as Code Objects with Unique IDs
In: ACS Applied Nano Materials 3 (2020), p. 734-741
DOI: 10.1021/acsanm.9b02245

Wintzheimer S., Reichstein J., Wenderoth S., Hasselmann S., Oppmann M., Seuffert MT., Mueller-Buschbaum K., Mandel K.
Expanding the Horizon of Mechanochromic Detection by Luminescent Shear Stress Sensor Supraparticles
In: Advanced Functional Materials 29 (2019), Article No.: 1901193
ISSN: 1616-301X
DOI: 10.1002/adfm.201901193

 

Icon: Adsorber for purification and sensing

We aim at designing supraparticles which can be added to fluids and interact specifically with target substances in these fluids. The ultimate goal is either an adsorption of the target substance onto the particle`s surface, or an interaction of the target substance with the building blocks of the supraparticles. As a result, as the particles typically also possess magnetic properties, target substances can either be removed and recovered from the fluid with the help of the supraparticles, or the supraparticles act as detectors and indicate the presence and concentration of the target substance.

 

Selected publications:

Supraparticles are considered as key to equip surfaces with interactive functionalities. We aim at creating surfaces that can optically indicate external influences (for example create surfaces that change color upon encounter of a target gas or upon shear stress) or whose surface properties can be switched (for example create a surface which can change its color or its temperature upon a magnetic switching event, or witch can catch and release substances).

 

Selected publications:

Icon: Photo-electro-catalysis

We started to look into the cooperative interplay of stimulable and catalytically active building blocks united in one single supraparticle entity.

More ist yet to come…

 

 

 

 

 

Group members

Current members of the Mandel group at the FAU

Logo: The Supraparticle Group

 

 

 

 

Location

We are Located at the Chair of Inorganic and General Chemistry, Egerlandstraße 1, in the second floor

 

 

Head

Post Docs

 

PhD students

 

Master’s students

  • Olga Lu
  • Andreas Zink
  • Frederic Rudlof

 

Hiwis

  • Hannes Bauer

Chemical technician

Short-time group members

Mandel group

Professorship for
Inorganic Chemistry
The Supraparticle Group

Logo: The Supraparticle Group

Prof. Dr. Karl Mandel

Department of Chemistry and Pharmacy
Professorship for Inorganic Chemistry (Prof. Dr. Mandel)

Room: Room A 2.20
Egerlandstraße 1
91058 Erlangen

 

Our research

Logo: The Supraparticle GroupWe assemble complex particles, so-called supraparticles, from nano building blocks, typically by means of ­spray‑drying; other methods are employed as well. The (mostly inorganic) nanoparticle building blocks are either tailored by means of wet chemical synthesis approaches by ourselves or are obtained from collaboration partners. A focus is on magnetic, optic and adsorber building blocks.

We are interested in novel, functional properties of such supraparticles to emerge from the cooperative interplay of the combined nano building blocks. We study how the supraparticle`s structure and complex composition determines the unique functionalities. With these supraparticles, we aim at creating smart materials in the field of sustainability; examples of applications include water purification, communicating materials and interactive surfaces. Find out more, here.

Transfer to application is achieved together with the Fraunhofer part of our group at Fraunhofer ISC in Würzburg.

 

 

Our mission

 

  • We co-authored a paper with the Fraunhofer ISC which reports that abrasive blasting of lithium metal surfaces yields clean and 3D structured lithium metal anodes with superior properties for batteries. The article just got accepted by Energy Technologies and can be found here.

  • Our article Overcoming the Inhibition Effects of Citrate: Precipitation of Ferromagnetic Magnetite Nanoparticles with Tunable Morphology, Magnetic Properties and Surface Charge via Ferrous Citrate Oxidation is featured as back cover in Particle & Particle Systems Characterization.

  • Our article Communicating Particles: Identification Taggant and Temperature Recorder in One Single Supraparticle is featured as frontispiece in Advanced Functional Materials.

  • Our articles "Communicating Particles: Identification Taggant and Temperature Recorder in One Single Supraparticle" and "A Single Magnetic Particle with Nearly Unlimited Encoding Options" meet a very high intererst also in various science media outlets. We are happy to be featured in:

    &...

  • Our recent article about a single magnetic particle with nearly unlimited encoding options was featured as an inside back cover of Small.

    You can find the article here.

  • We are pleased to welcome Laura Bittel in the Supraprticle Group. Her research will focus on multicomponent catalytic supraparticles.

    Welcome Laura!

  • Advanced Functional Materials just accepted our work, in which we demonstrate for the first time the successful design of a true communicating particle which not only carries a unique ID but also a recorder functionality all in one entity. The full title is: “Communicating Particles: Identification ...

  • Citrates are very often used to surface-functionalize iron oxide nanoparticles after their synthesis. However, they are not employed directly during synthesis as it is commonly observed that they inhibit the precipitation of the iron species. In our latest paper, which was just accepted by Particle ...