| AVS 55th International Symposium & Exhibition | |
| Surface Science | Thursday Sessions |
| Session SS-ThP |
| Session: | Poster Session |
| Presenter: | Y.C. Chu, Kyungpook National University, South Korea |
| Authors: | Y.C. Chu, Kyungpook National University, South Korea C.M. Kim, Kyungpook National University, South Korea |
| Correspondent: | Click to Email |
Heterogeneous catalysts are usually composed of 1 ~ 20 nm metal clusters. It is generally observed that the catalytic activity is greatly affected by the size of metal clusters. It is crucial to control the size of metal clusters in the fundamental studies of catalytic reactions. We fabricated ordered arrays of nonostructures for the study of size-selective model catalysts using porous anodized aluminum oxide (AAO) templates. The AAO templates whose pore sizes were 5 ~ 50 nm were prepared. A silver electrode was sputter-deposited on one side of the templates and Ni, Au and Pt were electrodeposited to produce nanocatalysts with a uniform size. The model catalyst surfaces were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), atomic force microscopy (AFM), X-ray photoelectoron spectroscopy and temperature-programmed desorption (TPD). Catalytic reaction of CO oxidation and propene epoxidation on these model catalyst surfaces will be presented.