The adsorption of and reaction of NO2 on Ag(111)-p(4 x 4)-O and formation of surface nitrate

被引:19
作者
Alemozafar, AR [1 ]
Madix, RJ [1 ]
机构
[1] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA
基金
美国国家科学基金会;
关键词
scanning tunneling microscopy; thermal desorption spectroscopy; surface chemical reaction; silver; inorganic compounds; oxygen; nitrogen dioxide; single crystal surfaces;
D O I
10.1016/j.susc.2005.05.019
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 and reaction of nitrogen dioxide on the Ag(1 1 1)-p(4 x 4)-O surface has been investigated with RAIRS, TPRS and STM. At 300 K NO2 initially reacts with the oxygen overlayer to form nitrate in p(3 x 3) and p(4 x 4) structures, which convert to a new p(3 x 3) at saturation coverage. Surface pitting during nitrate adsorption is suggestive of the incorporation of silver atoms into the NO3 structure. With heating NO3 decomposes into NO2 and O at 396 K and 497 K, and oxygen desorbs at 578 K. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:193 / 204
页数:12
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