In-situ ATR-IR study of water on gold electrode surface

被引：43

作者：

Futamata, M ^{[1
]}

机构：

[1] Natl Inst Adv Interdisciplinary Res, Joint Res Ctr Atom Technol, Tsukuba, Ibaraki 3058562, Japan

来源：

SURFACE SCIENCE | 1999年 / 427-28卷

关键词：

attenuated total reflection; water; gold;

D O I：

10.1016/S0039-6028(99)00261-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Three distinct water species were detected on gold (Au) film electrodes deposited on Si prism in 1 mM KX (X = F, Cl, Br or I) solutions using highly sensitive attenuated total reflection (ATR)-IR spectroscopy. Water molecules associated with halide ions at the Au surface give a fairly high frequency for O-H stretching mode at ca. 3585 cm(-1) with an extremely narrow band width of 50 cm(-1), corresponding to fairly weak hydrogen bonding. This band frequency depends not on the halide species but on the alkali metal cations. Furthermore, it was found that the IR background intensity is approximately proportional to the surface coverage of Br(-). (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：179 / 183

页数：5

共 13 条

[1] Potential-dependent reorientation of water molecules at an electrode/electrolyte interface studied by surface-enhanced infrared absorption spectroscopy [J].