Direct observation of adsorption evolution and bonding configuration of TMAA on TiO2(110)

被引：34

作者：

Lyubinetsky, I. ^{[1
]}

Yu, Z. Q. ^{[1
]}

Henderson, M. A. ^{[1
]}

机构：

[1] Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99352 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2007年 / 111卷 / 11期

关键词：

D O I：

10.1021/jp067264d

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：

Trimethylacetic acid (TMAA) adsorption evolution on the rutile TiO2(110) surface from submonolayer to saturation coverages was examined at the atomic level by scanning tunneling microscopy using the same area analysis approach. Upon TMAA deprotonation, no evidence of terminal OH group formation has been found. It has been suggested that uncommon geometry associated with detached hydrogen atom takes place instead, with proton bonding to pair bridging oxygen atoms. Such a configuration is likely to be stabilized by adjacent adsorbed TMA groups and, in turn, be a factor in the formation of TMA (2 x 1) reconstruction at saturation coverage. It also shown that the surface defects do not have a major impact on TMAA adsorption.

引用

页码：4342 / 4346

页数：5

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