Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
| Colorimetric determination of copper ions based on the catalytic leaching of silver from the shell of silver-coated gold nanorods | |
Wang, Xiaokun1,2,3; Chen, Ling1,2,3; Chen, Lingxin2,3,4
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| 发表期刊 | MICROCHIMICA ACTA
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| ISSN | 0026-3672 |
| 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 |
| 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 |
| 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.; 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. |
| 文章类型 | Article |
| 资助机构 | Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry; National Natural Science Foundation of China [21275158]; Chinese Academy of Sciences |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | THIOSULFATE SOLUTIONS ; NANOPARTICLES ; GROWTH ; PROBES ; ASSAY ; HG2+ |
| 研究领域[WOS] | Chemistry |
| WOS记录号 | WOS:000329099700010 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/6921 |
| 专题 | 中国科学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. |
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