A surface X-ray diffraction study of TiO2(110)(3 x 1)-S

被引：2
|
作者：
Daniels, B. G. [3 ]
Bikondoa, O. [4 ]
Thornton, G. [1 ,2 ]
机构：
[1] UCL, London Ctr Nanotechnol, London WC1H 0AJ, England
[2] UCL, Dept Chem, London WC1H 0AJ, England
[3] Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England
[4] European Synchrotron Radiat Facil, F-38043 Grenoble 09, France
来源：
SURFACE SCIENCE | 2009年 / 603卷 / 13期
基金：
英国工程与自然科学研究理事会;
关键词：
X-ray scattering; diffraction; and reflection; Chemisorption; Surface relaxation and reconstruction; Titanium oxide; Sulphur; Low index single crystal surfaces; CRYSTAL-STRUCTURES; SULFUR; METAL; ADSORPTION; LEED;
D O I：
10.1016/j.susc.2009.03.021
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：
Surface X-ray diffraction has been used to investigate the structure of TiO2(1 1 0)(3 x 1)-S. In concert with existing STM and photoemission data it is shown that on formation of a (3 x 1)-S overlayer, sulphur adsorbs in a position bridging 6-fold titanium atoms, and all bridging oxygens are lost. Sulphur adsorption gives rise to significant restructuring of the substrate, detected as deep as the fourth layer of the selvedge. The replacement of a bridging oxygen atom with sulphur gives rise to a significant motion of 6-fold co-ordinated titanium atoms away from the adsorbate, along with a concomitant rumpling of the second substrate layer. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：2015 / 2020
页数：6
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