| AVS 60th International Symposium and Exhibition | |
| Surface Science | Thursday Sessions |
| Session SS+EN-ThM |
| Session: | Photocatalysis and Photochemistry at Surfaces |
| Presenter: | A.X. Yu, University of California, Irvine |
| Authors: | A.X. Yu, University of California, Irvine S.W. Li, University of California, Irvine G. Czap, University of California, Irvine Y.N. Zhang, University of California, Irvine H.Y. He, University of California, Irvine R.Q. Wu, University of California, Irvine W. Ho, University of California, Irvine |
| Correspondent: | Click to Email |
The STM has proven to be an invaluable tool for studying surface chemistry at the atomic and molecular scale, such as bond formation, bond breaking, and photo-catalysis. Here we present STM studies on photon-induced desorption of H2 molecules from Au (110) surface. Upon laser irradiation, H2 is found to desorb from Au surface. We attribute the desorption mechanism to excitation of molecular vibrational modes by photon-induced hot electrons. We also study the photo-induced desorption and reaction of CO and O2 on Al2O3 / NiAl (110) surface. We hope to have a better understanding of various mechanisms for photon mediated reactions and effects of plasmon modes in nearby nanoparticles on chemical reactions.