Influence of electron-beam treatment of TiO2/Ti on properties of deposited Pt films
SURFACE AND INTERFACE ANALYSIS(2010)
Abstract
Synchrotron-radiation-based photoemission spectroscopy was used to examine the changes in the TiO2 surface structures as a result of high-energy e-beam exposure (under atmospheric pressure). The influence of the e-beam pre-treatment on the surface structure of post-deposited Pt on TiO2 and the CO oxidation activity of the Pt films were also investigated. Different types of defect sites (oxygen vacancies, OH-groups) on TiO2 created under different e-beam exposure conditions are suggested to either enhance or reduce the metal-support interface reaction, which influences structure and the catalytic activity of post-deposited Pt films. High-energy e-beam under atmospheric pressure can be used for the modification of metal-support interactions, which can improve activity of a catalyst. Copyright (C) 2010 John Wiley & Sons, Ltd.
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Key words
Photoelectron spectroscopy,electron-beam,Pt,oxide
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