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Label-free colorimetric sensing of copper(II) ions based on accelerating decomposition of H2O2 using gold nanorods as an indicator

文献类型：期刊论文

作者Wang, Shasha1,3; Chen, Zhaopeng1; Chen, Ling1,3; Liu, Ruili2; Chen, Lingxin1
刊名ANALYST
出版日期2013
卷号138期号:7页码:2080-2084
关键词Cu(Ii)-catalyzed Reaction Nanoparticles Probe Assay Polymer System Lead Oscillations Bistability Dnazyme
ISSN号0003-2654
产权排序[Wang, Shasha; Chen, Zhaopeng; Chen, Ling; Chen, Lingxin] Chinese Acad Sci, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai Inst Coastal Zone Res YIC,YICCAS, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China; [Liu, Ruili] Yantai Univ, Sch Environm & Mat Engn, Yantai 264005, Peoples R China; [Wang, Shasha; Chen, Ling] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
通讯作者Chen, ZP (reprint author), Chinese Acad Sci, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai Inst Coastal Zone Res YIC,YICCAS, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China. zhpchen@yic.ac.cn ; lxchen@yic.ac.cn
文献子类Article
英文摘要A novel label-free colorimetric strategy was reported for sensitive detection of copper ions (Cu2+) by using the decelerating etching of gold nanorods (GNRs). H2O2 was employed as the oxidant for corrosion of GNRs, leading to the decrease of the aspect ratio of GNRs. In the absence of Cu2+, the redox corrosion of GNRs by H2O2 occurred rapidly, causing the distinct color change of GNRs from bluish green to purplish red. By virtue of the strong and specific catalysis by Cu2+ of the decomposition of H2O2, the rate of redox corrosion can be decelerated. Relevant experimental parameters, including pH value, concentrations of NaSCN and H2O2, incubation temperature and time were evaluated. Under optimal conditions, our method gave a good linear range of 10-300 nM (R = 0.9985) for Cu2+ and the detection limit with the naked eye is as low as 10 nM. Thus, the proposed colorimetric sensor is simple, sensitive (4.96 nM) and selective, and it has been successfully applied to detect Cu2+ in shellfish samples. Moreover, the potential mechanism was also discussed.; A novel label-free colorimetric strategy was reported for sensitive detection of copper ions (Cu2+) by using the decelerating etching of gold nanorods (GNRs). H2O2 was employed as the oxidant for corrosion of GNRs, leading to the decrease of the aspect ratio of GNRs. In the absence of Cu2+, the redox corrosion of GNRs by H2O2 occurred rapidly, causing the distinct color change of GNRs from bluish green to purplish red. By virtue of the strong and specific catalysis by Cu2+ of the decomposition of H2O2, the rate of redox corrosion can be decelerated. Relevant experimental parameters, including pH value, concentrations of NaSCN and H2O2, incubation temperature and time were evaluated. Under optimal conditions, our method gave a good linear range of 10-300 nM (R = 0.9985) for Cu2+ and the detection limit with the naked eye is as low as 10 nM. Thus, the proposed colorimetric sensor is simple, sensitive (4.96 nM) and selective, and it has been successfully applied to detect Cu2+ in shellfish samples. Moreover, the potential mechanism was also discussed.
学科主题Chemistry, Analytical
URL标识查看原文
WOS关键词CU(II)-CATALYZED REACTION ; NANOPARTICLES ; PROBE ; ASSAY ; POLYMER ; SYSTEM ; LEAD ; OSCILLATIONS ; BISTABILITY ; DNAZYME
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000315598500024
资助机构National Natural Science Foundation of China [21275158]; Innovation Projects of the Chinese Academy of Sciences [KZCX2-EW-206]; Department of Science and Technology of Shandong Province [BS2009DX006]; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry; 100 Talents Program of the Chinese Academy of Sciences
公开日期2013-08-15
源URL[http://ir.yic.ac.cn/handle/133337/6627]  
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.Chinese Acad Sci, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai Inst Coastal Zone Res YIC,YICCAS, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China
2.Yantai Univ, Sch Environm & Mat Engn, Yantai 264005, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Shasha,Chen, Zhaopeng,Chen, Ling,et al. Label-free colorimetric sensing of copper(II) ions based on accelerating decomposition of H2O2 using gold nanorods as an indicator[J]. ANALYST,2013,138(7):2080-2084.
APA Wang, Shasha,Chen, Zhaopeng,Chen, Ling,Liu, Ruili,&Chen, Lingxin.(2013).Label-free colorimetric sensing of copper(II) ions based on accelerating decomposition of H2O2 using gold nanorods as an indicator.ANALYST,138(7),2080-2084.
MLA Wang, Shasha,et al."Label-free colorimetric sensing of copper(II) ions based on accelerating decomposition of H2O2 using gold nanorods as an indicator".ANALYST 138.7(2013):2080-2084.

入库方式： OAI收割

来源：烟台海岸带研究所

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