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

• 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

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，我们建造和改进了我们的固/液界面分析仪器。这些分析系统包括：1)比较原位电化学STM和非原位UHV-EC联用系统的测量结果；2)在紫外光下制备和定义单晶样品，进行原位电化学STM测量。1)电解质溶液中碘在铂(111)、金(111)和银(111)上的吸附结构分析。根据浸没电位的不同，碘在铂上形成(3x3)或(Roo&lt；7&gt；7&gt；)R19.1ﾟ结构。在Au(111)和Ag(111)表面上，根据溶液中施加的电极电位，碘表现出连续的结构变化。2)研究了Pd(111)、(100)和(110)电极表面的电化学刻蚀。结合系统可以理解原子尺度下的刻蚀过程。3)在超高真空下制备了Ni(100)和(111)表面，并将它们带入溶液中进行无污染的原位扫描隧道显微镜测量。在溶液中，镍表面呈现(100)和(111)两种结构。对刻蚀工艺也进行了研究。

项目成果

K,Itaya、他8人: "Electrochemistry of the I-on-Pd Single-crystal Interface:Studied by UHV-EC and In stiu STM" Surface Science. 335. 273-280 (1995)

K、Itaya 和其他 8 人：“I-on-Pd 单晶界面的电化学：由 UHV-EC 和 In stiu STM 研究”表面科学 335. 273-280 (1995)。

K.Sashikata,Y.Matsui,K.Itaya,and M.P.Soriaga: "Adsorbed-Iodine-Catalyzed Dissolution of Pd Single-Crystal Electrodes:Studies by Electrochemical Scanning Tunneling Microscopy" Journal of Physical Chemistry. 100. 20027-20034 (1996)

K.Sashikata、Y.Matsui、K.Itaya 和 M.P.Soriaga：“钯单晶电极的吸附碘催化溶解：电化学扫描隧道显微镜研究”物理化学杂志。

K. Sashikata, Y. Matsui, K. Itaya, and M. P. Soriaga: "Adsorbed-Iodine-Catalyzed Dissolution of Pd Single-Crystal Electrodes : Studies by Electrochemical Scanning Tunneling Microscopy" Journal of Physical Chemistry. 100. 20027-20034 (1996)

K. Sashikata、Y. Matsui、K. Itaya 和 M. P. Soriaga：“钯单晶电极的吸附碘催化溶解：电化学扫描隧道显微镜研究”物理化学杂志。

Y.-G.Kim,S-L,Yau,and K.Itaya: "Direct Observation of Complexation of Alkali Cations on Cyanide Modified Pt(111)by Scanning Tunneling Microscopy" Journal of American Chemical Society. 118. 393-340 (1996)

Y.-G.Kim、S-L、Yau 和 K.Itaya：“通过扫描隧道显微镜直接观察氰化物改性 Pt(111) 上碱阳离子的络合”美国化学会杂志。

Y.Nagatani,T.Hayashi,T.Yamada,and K.Itaya: "Scanning Tunneling Spectroscopic Study of Bare and Iodine Modified Au(111)and Pt(111)in Aqueous Solution and in Vacuum" Japanese Journal of Applied Physics. 35. 720-728 (1996)

Y.Nagatani、T.Hayashi、T.Yamada 和 K.Itaya：“水溶液和真空中裸露和碘改性 Au(111) 和 Pt(111) 的扫描隧道光谱研究”日本应用物理学杂志。