Improved surface-enhanced Raman scattering on optimum electrochemically roughened silver substrates

被引：15
|
作者：
Liu, Yu-Chuan
Yu, Chung-Chin
Sheu, Sen-Fu
机构：
[1] Vanung Univ, Dept Chem & Mat Engn, Chungli, Taiwan
[2] Vanung Univ, Dept Environm Engn, Chungli, Taiwan
来源：
ANALYTICA CHIMICA ACTA | 2006年 / 577卷 / 02期
关键词：
surface-enhanced Raman scattering; oxidation-reduction cycles; Ag substrates;
D O I：
10.1016/j.aca.2006.06.062
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In this work, the effects of preparation conditions used in roughening silver substrates by electrochemical triangular-wave oxidation-reduction cycles (ORC) on surface-enhanced Raman scattering (SERS) were first investigated. The optimum roughening conditions for obtaining strongest SERS of Rhodamine 6G (R6G) are as follows. Ag electrodes were cycled in deoxygenated aqueous solutions containing 0.1 M NaCl from -0.3 to +0.2 V versus Ag/AgCl at 25 mV s(-1) for five scans. The SERS of R6G adsorbed on this optimum procedure-prepared roughened Ag substrate exhibits a higher intensity by one order of magnitude, as compared with that of R6G adsorbed on a normally roughened Ag substrate. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：271 / 275
页数：5
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