Center for Functional Nanomaterials Seminar
"Integrated surface science and electrochemical methods to study SnOx/Pt electrocatalysts: Critical Insights for Catalyst Design"
Presented by Weiping Zhou
Thursday, March 7, 2013, 10 am
CFN, Building 735, conf. rm. B
Hosted by: Peter Sutter
Center for Functional Nanomaterials Seminar Integrated surface science and electrochemical methods to study SnOx/Pt electrocatalysts: Critical Insights for Catalyst Design Weiping Zhou Thursday, March 7, 2013 10:00 a.m. Bldg. 735 â€" Conf. Rm. B Metal oxides-promoted Pt catalyst systems have important applications for the electro-oxidation of carbon-based oxygenates (methanol, ethanol etc.). However, development and optimization of highly active but complex metal oxide-Pt nanocatalysts is hindered not only by questions regarding the nature of the active phase and reaction mechanism, but also by our limited understanding of metal oxide nanostructures in aqueous solutions. My research focuses on the experimental study of methanol and ethanol electrocatalysis on nanostructured metal oxides-promoted Pt model electrodes by using an approach that integrates surface science and electrochemical methods (SS-EC). In this talk, I will discuss our recent effort in the application of the SS-EC approach to study, for example, SnOx-promoted Pt that is one of the most active catalyst systems for the ethanol electro-oxidation reaction. Our achievement in understanding the fundamental properties (chemical composition, size) of tin oxide nanostructures and their synergetic effect with Pt, which strongly linked to the catalytic performance of SnOx/Pt electrodes in the EOR, highlights the basic research needs and also demonstrates the unique capability of the SS-EC approach in obtaining a better understanding of complex metal/metal oxide electrocatalyst systems. Host: Peter Sutter Joann Tesoriero Center for Functional Nanomaterials P.O. Box 5000, Bldg. 735 Upton, NY 11973 (631) 344-7791 fax (631) 344-3093 Tesoriero@bnl.gov