Herstellung und Charakterisierung von funktionellen metallischen und gemischt metallisch-halbleitenden nanokristall-basierten Aerogelen
Zusammenfassung der Projektergebnisse
Aerogels are unique solid materials with extremely low densities, high porosity, and large inner surface area. They combine the chemical and physical properties of nanomaterials with those of the macroscale and may integrate the specific properties of the various constituents in one resulting material, making aerogels very attractive in various applications such as (electro-) catalysis, thermoelectrics, and sensors. In this project we have developed new approaches to the formation of mixed aerogels based on various combinations of semiconductor and noble metal nanoparticles. The aerogels were characterized by a variety of microscopic, spectroscopic and analytical methods. Processes of energy and electronic transfer are investigated and described. For various aerogel systems, formation mechanisms are elucidated. Application potential as optical sensors, colour conversion materials and electrocatalysts is demonstrated.
Projektbezogene Publikationen (Auswahl)
- Colloidal Nanocrystal-Based Gels and Aerogels: Material Aspects and Application Perspectives. J. Phys. Chem. Lett. 2012, 3 (1), 8- 17
Gaponik, N.; Herrmann, A.-K.; Eychmüller, A.
(Siehe online unter https://doi.org/10.1021/jz201357r) - High-Performance Electrocatalysis on Palladium Aerogels. Angew. Chem., Int. Ed. 2012, 51 (23), 5743-5747
Liu, W.; Herrmann, A.-K.; Geiger, D.; Borchardt, L.; Simon, F.; Kaskel, S.; Gaponik, N.; Eychmüller, A.
(Siehe online unter https://doi.org/10.1002/anie.201108575) - Quantum-Dot-Based (Aero)gels: Control of the Optical Properties. J. Phys. Chem. Lett. 2012, 3 (16), 2188-2193
Wolf, A.; Lesnyak, V.; Gaponik, N.; Eychmüller, A.
(Siehe online unter https://doi.org/10.1021/jz300726n) - Bimetallic aerogels: high-performance electrocatalysts for the oxygen reduction reaction. Angew. Chem., Int. Ed. 2013, 52 (37), 9849-9852
Liu, W.; Rodriguez, P.; Borchardt, L.; Foelske, A.; Yuan, J.; Herrmann, A.-K.; Geiger, D.; Zheng, Z.; Kaskel, S.; Gaponik, N.; Koetz, R.; Schmidt, T. J.; Eychmüller, A.
(Siehe online unter https://doi.org/10.1002/anie.201303109) - Mixed Aerogels from Au and CdTe Nanoparticles. Adv. Funct. Mater. 2013, 23 (15), 1903-1911
Hendel, T.; Lesnyak, V.; Kühn, L.; Herrmann, A.-K.; Bigall, N. C.; Borchardt, L.; Kaskel, S.; Gaponik, N.; Eychmüller, A.
- Multimetallic Aerogels by Template-Free Self-Assembly of Au, Ag, Pt, and Pd Nanoparticles. Chem. Mater. 2014, 26 (2), 1074-1083
Herrmann, A.-K.; Formanek, P.; Borchardt, L.; Klose, M.; Giebeler, L.; Eckert, J.; Kaskel, S.; Gaponik, N.; Eychmüller, A.
(Siehe online unter https://doi.org/10.1021/cm4033258) - 3D assembly of silica encapsulated semiconductor nanocrystals. Nanoscale 2015, 7 (29), 12713-12721
Rengers, C.; Voitekhovich, S. V.; Kittler, S.; Wolf, A.; Adam, M.; Gaponik, N.; Kaskel, S.; Eychmueller, A.
(Siehe online unter https://doi.org/10.1039/c5nr01880c) - Noble Metal Aerogels-Synthesis, Characterization, and Application as Electrocatalysts. Acc. Chem. Res. 2015, 48 (2), 154-162
Liu, W.; Herrmann, A.-K.; Bigall, N. C.; Rodriguez, P.; Wen, D.; Oezaslan, M.; Schmidt, T. J.; Gaponik, N.; Eychmueller, A.
(Siehe online unter https://doi.org/10.1021/ar500237c) - Gold Aerogels: Three-Dimensional Assembly of Nanoparticles and Their Use as Electrocatalytic Interfaces. ACS Nano 2016, 10 (2), 2559-2567
Wen, D.; Liu, W.; Haubold, D.; Zhu, C.; Oschatz, M.; Holzschuh, M.; Wolf, A.; Simon, F.; Kaskel, S.; Eychmüller, A.
(Siehe online unter https://doi.org/10.1021/acsnano.5b07505)
