WATER-ADSORPTION ON STOICHIOMETRIC AND DEFECTIVE SNO2(110) SURFACES

被引：94

作者：

GERCHER, VA ^{[1
]}

COX, DF ^{[1
]}

机构：

[1] VIRGINIA POLYTECH INST & STATE UNIV,DEPT CHEM ENGN,BLACKSBURG,VA 24061

来源：

SURFACE SCIENCE | 1995年 / 322卷 / 1-3期

关键词：

LOW INDEX SINGLE CRYSTAL SURFACES; SEMICONDUCTING SURFACES; SURFACE CHEMICAL REACTION; SURFACE DEFECTS; THERMAL DESORPTION SPECTROSCOPY; TIN OXIDES; VISIBLE AND ULTRAVIOLET PHOTOELECTRON SPECTROSCOPY; WATER;

D O I：

10.1016/0039-6028(95)90028-4

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：

Water adsorption and dissociation was studied over stoichiometric and defective SnO2 (110) surfaces using thermal desorption spectroscopy (TDS) and ultraviolet photoelectron spectroscopy (UPS). Water is the only desorbing species observed in TDS, and the amount of dissociation is dependent on surface condition. A surface with a limited density of in-plane oxygen vacancies was found to give the highest dissociation probability for water. The local defect environment plays a considerable role in the activity of SnO2(110) surfaces for the heterolytic dissociation of water.

引用

页码：177 / 184

页数：8

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