Underpotential deposition of zinc ions on Au(111) in phosphate solution (pH 4.6): kinetic and STM studies

被引：28

作者：

Nakamura, M

Aramata, A ^{[1
]}

Yamagishi, A

Taniguchi, M

机构：

[1] Hokkaido Univ, Catalysis Res Ctr, Sapporo, Hokkaido 060, Japan

[2] Hokkaido Univ, Grad Sch Environm Earth Sci, Sapporo, Hokkaido 060, Japan

[3] Hokkaido Univ, Grad Sch Sci, Sapporo, Hokkaido 060, Japan

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1998年 / 446卷 / 1-2期

关键词：

Zn underpotential deposition; Au(111); phosphate adsorption; STM; upd kinetics;

D O I：

10.1016/S0022-0728(97)00632-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In phosphate solution at pH 4.6, in situ STM images on Au(111) were different in the potential regions where the Au(111) interface is taken to be free from phosphate adsorption and where the upd Zn is formed. In the former region, the observed STM image was Au(111)(1 x 1), and in the upd region, the image was taken to be (root 3 x root 3)R30 degrees. As the phosphate is expected to adsorb on upd Zn by oxidative reaction, it is suggested that the latter image is due to the adsorbed phosphate species formed on upd Zn at Au(111) by upd induced adsorption. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：227 / 231

页数：5

共 13 条

[1]

ARAMATA A, 1995, ELECTROCHIM ACTA, V40, P761

[2] AN IN-SITU ELECTROCHEMICAL QUARTZ-CRYSTAL MICROBALANCE STUDY OF THE UNDERPOTENTIAL DEPOSITION OF COPPER ON AU(111) ELECTRODES [J].