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，我们构建并改进了用于固/液界面分析的仪器，该分析系统的目的是：1）轻松比较原位电化学STM和非原位UHV-EC组合系统获得的结果；2）对在特高压下制备和定义的单晶样品进行原位电化学STM测量。1996年，我们利用这些仪器进行了以下研究：1）结构分析。电解质溶液中碘在 Pt(111)、Au(111) 和 Ag(111) 上的吸附结构 在 Pt(111) 上，碘形成 (3x3) 或 (ROO<7>xROO<7>)R19.1ﾟ。根据浸没电势的结构，碘根据施加的电极电势表现出连续的结构变化。 2) 通过组合系统研究了 Pd(111)、(100) 和 (110) 电极表面的电化学蚀刻。在 UHV 下制备表面，随后将其放入溶液中进行原位 STM 测量，无污染。 Ni 表面在溶液中显示出 (100) 和 (111) 结构。检查了。

项目成果

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,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。

T.Suzuki, T.Yamada, and K.Itaya: ""In Situ Electrochemical Scanning Tunneling Microscopy of Ni(111), Ni(100), and Sulfur-Modified Ni(100) in Acidic Solution"" Journal of Physical Chemistry. 100. 8954-8961 (1996)

T.Suzuki、T.Yamada 和 K.Itaya：“酸性溶液中 Ni(111)、Ni(100) 和硫改性 Ni(100) 的原位电化学扫描隧道显微镜”《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。