Surface Raman scattering studies on the adsorption of p-hydroxybenzoic acid at Au electrodes with ultraviolet excitation

被引：5

作者：

Wen, R ^{[1
]}

Fang, Y ^{[1
]}

机构：

[1] Capital Normal Univ, Beijing Key Lab Nanophoton & Nanostruct, Beijing 100037, Peoples R China

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2005年 / 576卷 / 02期

基金：

中国国家自然科学基金;

关键词：

ultraviolet (UV) excitation; surface Raman spectroscopy; p-hydroxybenzoic acid; an electrode; adsorption;

D O I：

10.1016/j.jelechem.2004.10.020

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The potential-dependent surface Raman spectrum of adsorbed p-hydroxybenzoic acid (PHBA) on a roughened Au electrode has been obtained with ultraviolet excitation at 325 nm. The surface Raman spectra of PHBA are sensitive to the negative shift of potential and the electrode potential at which the resonance (potential of maximum intensity) occurs varies with the vibrational mode, indicating that the PHBA molecules are chemisorbed on the Au surface. A non-radiative charge transfer mechanism could probably explain the experiment results in the present work. The probable reasons are given. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：237 / 242

页数：6

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