NO Adsorption on Ag/Pt(110)-(1x2) Bimetallic Surfaces: Unexpected Formation of Nitrite/nitrate Surface Species

被引：1
作者：
Li, Jin-bing [3 ]
Jiang, Zhi-quan [1 ,2 ]
Huang, Wei-xin [1 ,2 ]
机构：
[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, CAS Key Lab Mat Energy Convers, Hefei 230026, Peoples R China
[2] Univ Sci & Technol China, Dept Chem Phys, Hefei 230026, Peoples R China
[3] SINOPEC Beijing Res Inst Chem Ind, Yanshan Branch, Beijing 102500, Peoples R China
来源：
CHINESE JOURNAL OF CHEMICAL PHYSICS | 2011年 / 24卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Nitric oxide; Ag-Pt bimetallic surface; Nitrite/nitrate surface species; Synergetic effect; PT(110)-(1 X-2) SURFACE; SILVER THIN-FILM; AG(111) SURFACE; INITIAL GROWTH; NITRIC-OXIDE; NITRATE; OXYGEN; RECONSTRUCTION; TRANSITION; NO/O-2;
D O I：
10.1088/1674-0068/24/06/735-740
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
NO adsorption on Ag/Pt(110)-(1x2) bimetallic surfaces at room temperature was investigated by means of Auger electron spectroscopy, X-ray photoelectron spectroscopy and thermal desorption spectroscopy. An unexpected formation of nitrite/nitrate surface species on Ag/Pt(110)-(1x2) bimetallic surfaces is observed, then decompose at elevated temperatures to form N(2). However, such nitrite/nitrate surface species do not form on clean Pt(110) and Ag-Pt alloy surfaces upon NO exposure at room temperature. The formation of nitrite/nitrate surface species on Ag/Pt(110)-(1 x 2) bimetallic surfaces is attributed to high reactivity of highly coordination-unsaturated Ag clusters and the synergetic effect between Ag clusters and Pt substrate.
引用
收藏
页码：735 / 740
页数：6
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