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Influence of electron‐beam treatment of TiO 2 /Ti on properties of deposited Pt films
Author(s) -
Kim KwangDae,
Tai Wei Sheng,
Kim Young Dok,
Lee Byung Cheol,
Yang Ki Ho,
Park Ji Hyun
Publication year - 2010
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.3316
Subject(s) - x ray photoelectron spectroscopy , catalysis , synchrotron radiation , metal , cathode ray , materials science , atmospheric pressure , oxygen , beam energy , beam (structure) , synchrotron , analytical chemistry (journal) , chemical engineering , chemistry , electron , metallurgy , optics , organic chemistry , nuclear physics , physics , oceanography , engineering , geology
Synchrotron‐radiation‐based photoemission spectroscopy was used to examine the changes in the TiO 2 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 TiO 2 and the CO oxidation activity of the Pt films were also investigated. Different types of defect sites (oxygen vacancies, OH‐groups) on TiO 2 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 © 2010 John Wiley & Sons, Ltd.