Surface-enhanced Raman scattering-active silver nanostructures with two domains

Chun Chao Chang, Kuang Hsuan Yang, Yu Chuan Liu, Chung Chin Yu

研究成果: 雜誌貢獻文章同行評審

12 引文 斯高帕斯(Scopus)

摘要

Generally, a controllable and reproduced surface roughness for surface-enhanced Raman scattering (SERS) studies can be generated through control of the electrochemical oxidation-reduction cycles (ORC) procedure. In this work, we propose a new sonoelectrochemical approach to prepare SERS-active substrates with two domain-Ag nanostructures. The method is based on a strategy of deposition-dissolution cycles (DDCs) by using a cathodic overpotential and an anodic overpotential from open circuit potential (OCP) in turn under sonication. The prepared SERS-active substrate demonstrates large Raman scattering enhancement for adsorbed Rhodamine 6G (R6G) with an enhancement factor of 2.3×10 8 and a limit of detection of 2×10 -13M. The improved SERS performances can be successfully explained from the viewpoints of electromagnetic (EM) and chemical (CHEM) enhancements.

原文英語
頁(從 - 到)91-97
頁數7
期刊Analytica Chimica Acta
709
DOIs
出版狀態已發佈 - 一月 4 2012

ASJC Scopus subject areas

  • 生物化學
  • 分析化學
  • 光譜
  • 環境化學

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