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New electrochemical method to deposit surface-enhanced Raman scattering-active silver nanoparticles on metal substrates

Content Provider	Royal Society of Chemistry (RSC)
Author	Juang, Ming-Yu Liu, Yu-Chuan Yang, Kuang-Hsuan Hsu, Ting-Chu Mai, Fu-Der
Copyright Year	2011
Abstract	As shown in the literature, many methods have been developed to improve the signal, reproducibility and stability of surface-enhanced Raman scattering (SERS) for its reliable application. However, the fabrication needed is laborious. In this work, we propose an effective method to prepare SERS-active substrates with Ag nanoparticles (NPs) by a new electrochemical strategy of deposition–dissolution cycles (DDCs). This electrochemical method is based on a cathodic potential of 0.25 V and an anodic potential of 1.05 V vs.Ag/AgCl, which are applied in turn under sonication. The prepared SERS-active substrate demonstrates a large Raman scattering enhancement for adsorbed Rhodamine 6G (R6G). The practical detection limit for polypyrrole deposited on this substrate is 0.1 μC cm−2. Moreover, the prepared SERS-active substrates exhibit satisfactory reproducibility and thermal stability. The SERS spectrum of R6G on the newly developed substrate still performs well at a high temperature of 250 °C.
Starting Page	1324
Ending Page	1332
Page Count	9
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	1
Issue Number	7
Journal	RSC Advances
DOI	10.1039/c1ra00575h
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Sonication SERS Raman scattering Microcontroller Surface-enhanced Raman spectroscopy Electrochemistry Raman Rhodamine 6G Polypyrrole
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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