Interaction of oxygen with oxide-supported gold films

ORAL

Abstract

Whilst bulk gold is known to be inert, oxide-supported gold nanoparticles have been found to be highly effective in the catalysis of low temperature oxidation of carbon monoxide. This remarkable activity has been attributed to effects of charge transfer to and from the gold nanoparticles, quantum size effects, reduced co-ordination of gold atoms, as well as interface effects. However, the relative importance of such effects is still controversial. In this work, we seek to distinguish these effects and understand their relative importance, using model systems involving oxide-supported gold films.

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Authors

  • Su Ying Quek

    Harvard University

  • Joydeep Bhattacharjee

  • Umesh Waghmare

    Jawaharlal Nehru Centre for Advanced Scientific Research, J. Nehru Centre for Advanced Scientific Research, Bangalore, India

  • Efthimios Kaxiras

    Harvard University, Department of Physics, Harvard University, Physics Department and Division of Engineering and Applied Sciences, Harvard University