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Colorimetric determination of copper ions based on the catalytic leaching of silver from the shell of silver-coated gold nanorods

文献类型：期刊论文

作者Wang, Xiaokun1,2,3; Chen, Ling1,2,3; Chen, Lingxin2,3,4
刊名MICROCHIMICA ACTA
出版日期2014
卷号181期号:1-2页码:105-110
关键词Colorimetric assay Copper ions Silver-coated gold nanorods Catalytic leaching
ISSN号0026-3672
产权排序[Wang, Xiaokun; Chen, Ling] Qufu Normal Univ, Coll Chem & Chem Engn, Qufu 273165, Peoples R China; [Wang, Xiaokun; Chen, Ling; Chen, Lingxin] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai 264003, Peoples R China; [Wang, Xiaokun; Chen, Ling; Chen, Lingxin] Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China; [Chen, Lingxin] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
通讯作者Chen, LX (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai 264003, Peoples R China. lxchen@yic.ac.cn
中文摘要We have developed a method for the colorimetric determination of copper ions (Cu2+) that is based on the use of silver-coated gold nanorods (Au@Ag NRs). Its outstanding selectivity and sensitivity result from the catalytic leaching process that occurs between Cu2+, thiosulfate (S2O3 (2-)), and the surface of the Au@Ag NRs. The intrinsic color of the Au@Ag NRs changes from bright red to bluish green with decreasing thickness of the silver coating. The addition of Cu2+ accelerates the leaching of silver from the shell caused in the presence of S2O3 (2-). This result in a decrease in the thickness of the silver shell which is accompanied a change in color and absorption spectra of the colloidal solution. The shifts in the absorption maxima are linearly related to the concentrations of Cu2+ over the 3-1,000 nM concentration range (R = 0.996). The method is cost effective and was applied to the determination of Cu2+ in real water samples.
英文摘要We have developed a method for the colorimetric determination of copper ions (Cu2+) that is based on the use of silver-coated gold nanorods (Au@Ag NRs). Its outstanding selectivity and sensitivity result from the catalytic leaching process that occurs between Cu2+, thiosulfate (S2O3 (2-)), and the surface of the Au@Ag NRs. The intrinsic color of the Au@Ag NRs changes from bright red to bluish green with decreasing thickness of the silver coating. The addition of Cu2+ accelerates the leaching of silver from the shell caused in the presence of S2O3 (2-). This result in a decrease in the thickness of the silver shell which is accompanied a change in color and absorption spectra of the colloidal solution. The shifts in the absorption maxima are linearly related to the concentrations of Cu2+ over the 3-1,000 nM concentration range (R = 0.996). The method is cost effective and was applied to the determination of Cu2+ in real water samples.
学科主题Chemistry, Analytical
研究领域[WOS]Chemistry
关键词[WOS]THIOSULFATE SOLUTIONS ; NANOPARTICLES ; GROWTH ; PROBES ; ASSAY ; HG2+
收录类别SCI
资助信息Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry; National Natural Science Foundation of China [21275158]; Chinese Academy of Sciences
原文出处http://dx.doi.org/10.1007/s00604-013-1075-7
语种英语
WOS记录号WOS:000329099700010
公开日期2014-07-08
源URL[http://ir.yic.ac.cn/handle/133337/6921]  
专题烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
作者单位1.Qufu Normal Univ, Coll Chem & Chem Engn, Qufu 273165, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai 264003, Peoples R China
3.Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Xiaokun,Chen, Ling,Chen, Lingxin. Colorimetric determination of copper ions based on the catalytic leaching of silver from the shell of silver-coated gold nanorods[J]. MICROCHIMICA ACTA,2014,181(1-2):105-110.
APA Wang, Xiaokun,Chen, Ling,&Chen, Lingxin.(2014).Colorimetric determination of copper ions based on the catalytic leaching of silver from the shell of silver-coated gold nanorods.MICROCHIMICA ACTA,181(1-2),105-110.
MLA Wang, Xiaokun,et al."Colorimetric determination of copper ions based on the catalytic leaching of silver from the shell of silver-coated gold nanorods".MICROCHIMICA ACTA 181.1-2(2014):105-110.

入库方式： OAI收割

来源：烟台海岸带研究所

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