TY - JOUR
T1 - Effects of electrolytes used in roughening gold substrates by oxidation-reduction cycles on surface-enhanced Raman scattering
AU - Liu, Yu Chuan
AU - Wang, Chee Chan
AU - Tsai, Chun En
N1 - Funding Information:
The authors thank the National Science Council of the Republic of China (NSC-92-2214-E-238-001) and Vanung University for their financial support.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2005/12
Y1 - 2005/12
N2 - In this work, the effects of electrolytes used in roughening gold substrates by electrochemical methods on surface-enhanced Raman scattering (SERS) were first investigated. First, gold substrates were roughened by triangular-wave oxidation-reduction cycles (ORC) in aqueous solutions containing different kinds of 0.1 M electrolytes. Then Rhodamine 6G (R6G) was used as Raman probe to examine this effect of electrolytes used on the SERS observed. The result indicates that the highest intensity of SERS of R6G was obtained on the roughened Au substrate prepared in 0.1 M NaCl, which was less used in the literature. Meanwhile, it was also found that the rougher surface morphology observed, which is contributive to the higher SERS obtained, is corresponding to the smaller cathodic peak area shown in the cyclic voltammograms for roughening the Au substrate.
AB - In this work, the effects of electrolytes used in roughening gold substrates by electrochemical methods on surface-enhanced Raman scattering (SERS) were first investigated. First, gold substrates were roughened by triangular-wave oxidation-reduction cycles (ORC) in aqueous solutions containing different kinds of 0.1 M electrolytes. Then Rhodamine 6G (R6G) was used as Raman probe to examine this effect of electrolytes used on the SERS observed. The result indicates that the highest intensity of SERS of R6G was obtained on the roughened Au substrate prepared in 0.1 M NaCl, which was less used in the literature. Meanwhile, it was also found that the rougher surface morphology observed, which is contributive to the higher SERS obtained, is corresponding to the smaller cathodic peak area shown in the cyclic voltammograms for roughening the Au substrate.
KW - Electrolytes
KW - Oxidation-reduction cycles
KW - Surface-enhanced Raman scattering
UR - http://www.scopus.com/inward/record.url?scp=27844536870&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=27844536870&partnerID=8YFLogxK
U2 - 10.1016/j.elecom.2005.09.030
DO - 10.1016/j.elecom.2005.09.030
M3 - Article
AN - SCOPUS:27844536870
SN - 1388-2481
VL - 7
SP - 1345
EP - 1350
JO - Electrochemistry Communications
JF - Electrochemistry Communications
IS - 12
ER -