拓宽具有原子分辨率的ECSTM研究至多晶电极表面

作     者：施财辉 蔡雄伟 陈燕霞 田中群 毛秉伟 

作者机构：厦门大学物理化学研究所化学系厦门361005 

出 版 物：《物理化学学报》 (Acta Physico-Chimica Sinica)

年 卷 期：1997年第13卷第12期

页      面：1061-1064页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：固体表面物理化学国家重点实验室和国家自然科学基金 

主　　题：STM ECSTM 原子分辨率 多晶电极 银 吸附 碘 

摘      要：Electrochemical Scanning TUnneling Microscopy (ECSTM) has been extended to characterizc polycrystalline silver electrode surfaces in iodide solution. Potential-dependcnt ordered and disordered structures of the silver electrode as well as the iodine adsorption layer have been obscrved to coexist on polycrystalline silver electrode surfaces, for the first time. A very special column arrangement of the iodine adsorption layer, similar to the so called ndssing row type of structure has been obseryed. Some columns of the iodine adsorption layer roll over from one place to another along with the time and changing potential. A proposed model has been given to better describe the structure. The highly corrugated and loose surface structure of the polycrystalline surface are responsible for this special phenomenon.