Structural Analysis of Solid/Liquid Interfaces by Using UHV-EC STM Combining Systems

使用 UHV-EC STM 组合系统进行固/液界面的结构分析

基本信息

批准号：
07459029
负责人：
ITAYA Kingo
金额：
$ 0.64万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07459029/
关键词：
Electrochemical Surface Science Electrochemical STM UHV-EC Combining Instrumentation Single Crystal Electrode Solid Liquid Interfaces Iodine Electrochemical Etching Group VIII Metals 電界エッチング超高真空電気化学 LEED AES STM Pt(111)ヨ

项目摘要

In 1995, we constructed and improved our instruments for the analysis of solid/liquid interfaces. The analyical systems are for 1) easily comparing the results obtained by in-situ electrochemical STM and ex-situ UHV-EC combining system and for 2) in-situ electrochemical STM measurements on the single crystal samples prepared and defined under UHV.In 1996, by using these instruments, We carried out the following investigations. 1) Structural analysis of the adsorption structures of iodine on Pt(111), Au(111), and Ag(111) in electrolyte solutions. On Pt(111), iodine formes (3x3) or (ROO<7>xROO<7>)R19.1ﾟ structure according to the immersion potentials. On Au(111) and Ag(111), iodine exibites continuous structural change according to the applied electrode potentials in solutions. 2) Electrochemical etching of Pd(111), (100), and (110) electrode surfaces were examined. The etching process in an atomic scale was understood by the combining system. 3) Ni(100) and (111) surfaces were prepared under UHV,and they were subsequently brought into solutions for in-situ STM measurements without polution. Ni surfaces showed (100) and (111) structures in solutions. The etching processes were also examined.

1995年，我们构建并改进了我们的工具，以分析固体/液体界面。分析的系统用于1）轻松地比较通过原位电化学STM和Ex-Situ UHV-EC组合系统获得的结果，以及2）在UHV.in 1996中制备并定义的单晶体样品的原位电化学STM测量结果，使用这些工具，我们使用这些工具进行了以下研究。 1）电解质溶液中碘（111），AU（111）和AG（111）上碘的吸附结构的结构分析。在PT（111）上，碘形式（3x3）或（Roo <7> Xroo <7>）R19.1 ﾟ结构，根据浸入电位。在AU（111）和AG（111）上，碘外替我根据溶液中施加的电极电势的连续结构变化。 2）检查了PD（111），（100）和（110）电极表面的电化学蚀刻。组合系统理解了原子量表中的蚀刻过程。 3）Ni（100）和（111）表面是在UHV下制备的，随后将它们带入解决方案，以进行现场的STM测量，而没有政治。 Ni表面在溶液中显示（100）和（111）结构。还检查了蚀刻过程。