Room-temperature-adsorption behavior of acetic anhydride on a TiO2(110) surface

被引：27

作者：

Ashima, Hidenori ^{[1
]}

Chun, Wang-Jae ^{[1
]}

Asakura, Kiyotaka ^{[1
]}

机构：

[1] Hokkaido Univ, Catalysis Res Ctr, Sapporo, Hokkaido 0010021, Japan

来源：

SURFACE SCIENCE | 2007年 / 601卷 / 08期

基金：

日本科学技术振兴机构;

关键词：

TiO2(110); rutile; acetic anhydride; adsorption; HREELS; XPS;

D O I：

10.1016/j.susc.2007.02.008

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have studied the adsorption structure of acetic anhydride on a TiO2 (1 1 0) surface using XPS (X-ray photoelectron spectroscopy), LEED (low energy electron diffraction) and HREELS (high resolution electron energy loss spectroscopy) to determine the origins of the unique adsorption properties of carboxylic acids on a TiO2(1 1 0) surface. The C 1s XPS data indicated that the saturation carbon amount of adsorbed acetic anhydride was 12 +/- 3% larger than that of the adsorbed acetic acid. LEED showed p(2 x 1) weak spots for the acetic anhydride adsorbed surface. The HREELS spectra revealed the dissociative adsorption of acetic anhydride. Based on these findings, we concluded that the neutralization of the bridging oxygen atoms associated with the dissociative adsorption is necessary for the stable adsorption of carboxylates on the 5-fold Ti sites. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1822 / 1830

页数：9

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