The shape, size and composition of metallic nanoparticles play a decisive role in achieving specific surface functionality for various applications. For instance, the properties of metal NPs can be tailored by changing the aforementioned parameters for their applications as heterogeneous, electro- and photo-catalysts. In our group we utilize electrochemical “top-down” approach to produce metallic nanoparticles with desired shapes and sizes.
The Figure below illustrates the electrochemical top-down synthesis of metal nanoparticles
J. Fichtner, S. Watzele, B. Garlyyev, R. Kluge, F. Haimerl, H. El-Sayed, W.-J. Li, F. Maillard, L. Dubau, R. Chattot, J. Michalicka, J. Macak, W. Wang, D. Wang, T. Gigl, C. Hugenschmidt, A.S. Bandarenka. Tailoring the oxygen reduction activity of Pt nanoparticles through surface defects: a simple top-down approach. ACS Catalysis 10 (2020) 3131-3142
B. Garlyyev,(1) K. Kratzl,(1) M. Rück,(1) J. Michalička, J. Fichtner, J. Macak, T. Kratky, S. Günther, M. Cokoja, A.S. Bandarenka, A. Gagliardi, R. Fischer. Optimizing the size of platinum nanoparticles for enhanced oxygen electro-reduction mass activity. Angewandte Chemie International Edition 58 (2019) 9596-9600
J. Fichtner,(1) B. Garlyyev,(1) S. Watzele, H. A El-sayed, J. Schwaemmlein, W. Li, F. Maillard, L. Dubau, J. Michalicka, J. Macak, A.W. Holleitner, A.S. Bandarenka. Top-Down Synthesis of Nanostructured Platinum-Lanthanide Alloy Oxygen Reduction Reaction Catalysts: PtxPr/C as an Example. ACS Applied Materials and Interfaces 11 (2019) 5129-5135