In situ structural study on underpotential deposition of Ag on Au(111) electrode using surface X-ray scattering technique
In situ structural study on underpotential deposition of Ag on Au(111) electrode using surface X-ray scattering technique
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DOI：
10.1016/s0022-0728(02)00705-2
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发表时间：
2002-09-06
影响因子：
4.5
通讯作者：
Uosaki, K
中科院分区：
文献类型：
--
作者：
Kondo, T;Morita, J;Uosaki, K
用原位表面X射线散射（SXS）方法研究了硫酸溶液中欠电位沉积（upd）法在Au（111）电极上形成的Ag层的结构。镜面反射棒的配置文件表明，单层的银形成在第二和第三upd峰之间的电位，和双层的银形成在第三upd峰和散装沉积之间的电位。非镜面杆的配置文件表明，电化学沉积的银原子在第一和第二层分别位于三重中空立方最紧密堆积（CCP）的网站的底层Au和Ag层，分别。(C)2002 Elsevier Science B.V.保留所有权利。
In situ surface X-ray scattering (SXS) measurements were carried out to study the structure of a Ag layer on a Au(111) electrode formed by underpotential deposition (upd) in sulfuric acid solution. Specular rod profiles showed that a monolayer of Ag was formed at a potential between the second and third upd peaks, and a bilayer of Ag was formed at a potential between the third upd peak and bulk deposition. Non-specular rod profiles demonstrated that electrochemically deposited Ag atoms both in the first and second layers were situated at the threefold hollow cubic closest packing (ccp) site of the underlying Au and Ag layers, respectively. (C) 2002 Elsevier Science B.V. All rights reserved.