期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 366, 期 1-3, 页码 163-169出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2010.06.010
关键词
Surface-enhanced Raman scattering (SERS); Perchlorate; Silver nanofilm; Copper foil; Galvanic displacement reaction
Surface-enhanced Raman scattering (SERS) has recently emerged as a tremendous potential method for chemical and biomolecular sensing. SERS analysis of perchlorate using Ag nanofilms deposited on Cu foils (Ag-Cu films) by galvanic displacement reaction was investigated for the first time in this work. The Ag-Cu films were prepared in the solutions containing 2.5-50 mM of AgNO3 with the reaction time from 0.5-60 min. The relationship between the surface nanostructures of the Ag-Cu films and the SERS sensitivity of perchlorate was examined. The close-packed Ag nanoparticles with an average diameter of 105 nm yielded the highest SERS enhancement for perchlorate. Standard calibration curves were prepared with SERS spectra recorded on this optimum Ag-Cu film. At low concentration and in a narrow concentration range, a linear relationship between peak areas and perchlorate concentrations was observed, while a log-log plot yielded a linear relationship over a broad concentration range. The detection limit was determined to be 50 mu g L-1 for perchlorate. (C) 2010 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据