The adsorption of benzoic acid on a TiO2(110) surface studied using STM, ESDIAD and LEED

被引：62

作者：

Guo, Q ^{[1
]}

Cocks, I ^{[1
]}

Williams, EM ^{[1
]}

机构：

[1] Univ Liverpool, Ctr Surface Sci, Liverpool L69 3BX, Merseyside, England

来源：

SURFACE SCIENCE | 1997年 / 393卷 / 1-3期

基金：

英国工程与自然科学研究理事会;

关键词：

adsorption; benzoic acid; electron stimulated desorption ion angular distribution; low energy electron diffraction; metal oxides; scanning tunneling microscopy; surface structure; TiO2;

D O I：

10.1016/S0039-6028(97)00625-0

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：

The adsorption of benzoic acid on a TiO2(110) surface at room temperature has been studied using scanning tunneling microscopy (STM), electron stimulated desorption ion angular distribution (ESDIAD), and low energy,qv electron diffraction (LEED). The adsorption is dissociative, forming benzoate and surface hydroxyl. The adsorbed benzoate is bonded through the carboxyl group with the five-fold coordinated Ti4+ cations, and forms an ordered pseudo-(2 x 1) overlayer al a saturation coverage of 0.5 ML. This (2 x 1) structure is mainly determined by the relatively strong absorbate-substrate interaction. Attractive interactions between aromatic rings of the benzoates lead to the formation of dimerised benzoate rows along the [001] direction. (C) 1997 Elsevier Science B.V.

引用

页码：1 / 11

页数：11

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