High performance Au/Ag core/shell bipyramids for determination of thiram based on surface‐enhanced Raman scattering
作者： Xia Zheng , Yanhua Chen , Yang Chen , Ning Bi , Haibo Qi
DOI: 10.1002/JRS.4087
关键词: Molecule 、 Adsorption 、 Metal 、 Raman scattering 、 Raman spectroscopy 、 Analytical chemistry 、 Shell (structure) 、 Detection limit 、 Thiram 、 Chemistry
摘要: Au/Ag core/shell bipyramids were used as surface-enhanced Raman scattering (SERS) substrates to determine the thiram. The metallic showed high SERS performance and are very suitable for analytical sensors. fabrication characterization of described. influence experimental parameters, such thickness Ag shell bipyramids, sodium chloride concentration, pH value on thiram was examined optimized. Under optimum conditions, molecules effectively adsorbed onto intensity is proportional concentration in range 3.3 400.0 ng mL–1. corresponding correlation coefficient linear equation 0.997, which indicates that there a good relationship between concentration. limit detection 2.0 ng mL–1. results indicate proposed method viable determination Some environmental water samples analyzed satisfactory. Copyright © 2012 John Wiley & Sons, Ltd.
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