Bimetallic Au/Ag nanoframes as spectator for Co2+ ion

被引：9
|
作者：
Lee, Heyjin [1 ]
Sung, Hwa Kyung [2 ]
Park, Chulhwan [1 ]
Kim, Younghun [1 ]
机构：
[1] Kwangwoon Univ, Dept Chem Engn, Kwangwoon Ro 20, Seoul 01897, South Korea
[2] Natl Inst Environm Res, Hwangyong Ro 42, Incheon 22689, South Korea
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2017年 / 48卷
关键词：
Colorimetric detection; Bimetallic nanoparticles; Heavy metal ions; Spectator; FUNCTIONALIZED GOLD NANOPARTICLES; SILVER NANOPARTICLES; COLORIMETRIC DETECTION; AQUEOUS-SOLUTION; METAL-IONS; NANOPRISMS; PHOTOVOLTAGE; MECHANISM;
D O I：
10.1016/j.jiec.2017.01.007
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A highly sensitive colorimetric sensing methodology based on glutathione (GSH)-modified silver nanoparticles (AgNP) for the selective analysis for Co2+ ions is reported. We attempted to enhance the chemical stability of AgNPs in low pH condition by additional treatments such as sulfidation and galvanic replacement reaction (GRR). Bimetallic Au/Ag nanoframes (Au/AgNF) with center-open nanostructures were prepared via GRR, and the selective detection of Co2+ ion was evaluated at various concentrations. GSH-Au/AgNF has good linearity between concentration of Coe' ion and absorbance intensity in UV-vis spectra, and thus allows a rapidly quantitative assay of Co2+ down to 1.7 mu M.(C) 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：235 / 241
页数：7
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