NO Adsorption on Ag/Pt（110）-（1×2） Bimetallic Surfaces： Unexpected Formation of Nitrite/nitrate Surface Species  

NO在Ag／Pt（110）-（1×2）双金属表面的吸附：亚硝酸盐／硝酸盐表面物种的生成

作　　者：李金兵[1] 姜志全[2] 黄伟新[2] 

机构地区：[1]中国石化北京北化院燕山分院,北京102500 [2]中国科学院能量转换材料重点实验室,中国科学技术大学合肥微尺度物质科学国家实验室,化学物理系,合肥230026

出　　处：《Chinese Journal of Chemical Physics》2011年第6期735-740,I0004,共7页化学物理学报（英文）

基　　金：This work was supported by the National Natural Science Foundation of China （No.20973161 and No.11079033）, the Ministry of Science and Technology of China （No.2010CB923302）, the Fundamental Research Funds for the Central Universities, and the MPG-CAS partner group program.

摘　　要：NO adsorption on Ag/Pt（110）-（1×2） 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）-（1 ×2） bimetallic surfaces is observed, then decompose at elevated temperatures to form N2. 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）-（1×2） bimetallic surfaces is attributed to high reactivity of highly coordination-unsaturated Ag clusters and the synergetic effect between Ag clusters and Pt substrate.

关 键 词：Nitric oxide Ag-Pt bimetallic surface Nitrite/nitrate surface species Synergetic effect 

分 类 号：O[理学]