AVS 65th International Symposium & Exhibition
    Surface Science Division Friday Sessions
       Session SS+AS+HC-FrM

Invited Paper SS+AS+HC-FrM1
Ambient Pressure Electron Spectroscopy (XPS, XAS) and Electron Microscopy Studies of the Structure and Chemistry of Nanostructured Model Catalysts

Friday, October 26, 2018, 8:20 am, Room 203C

Session: Near/Ambient Pressure and Bridging Gaps between Surface Science and Catalysis
Presenter: John Hemminger, University of California Irvine
Correspondent: Click to Email
We use physical vapor deposition to create a high density of metal oxide nanoparticles on highly oriented pyrolytic graphite (HOPG). Photoelectrochemical methods are then utilized to selectively decorate the metal oxide nanoparticles with transition metal nanoparticles. This talk willl describe our studies of the Pt/TiO2/HOPG ; Cu/ZnO/HOPG systems. The nanostructured surfaces are characterized by SEM, TEM, XPS, and synchrotron based XAS. Lab-based and synchrotron based ambient pressure XPS experiments have been used to study the CO oxidation reaction on Pt/TiO2/HOPG and the CO2 reduction reaction on CuOx/TiO2/HOPG. In addition, the catalytic activity of CuOx/TiO2/HOPG for electrochemical CO2 reduction has been studied using differential electrochemical mass spectrometry (DEMS).