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Colorimetric sensing of copper(II) based on catalytic etching of gold nanoparticles

文献类型：期刊论文

作者Liu, Ruili1; Chen, Zhaopeng2,3; Wang, Shasha2,3,4; Qu, Chengli2,3; Chen, Lingxin2,3; Wang, Zhuo1
刊名TALANTA
出版日期2013-08-15
卷号112页码:37-42
关键词Gold nanoparticle Colorimetric Copper ion Surface plasmon resonance
ISSN号0039-9140
产权排序[Liu, Ruili; Wang, Zhuo] Yantai Univ, Sch Environm & Mat Engn, Yantai 264003, Peoples R China; [Chen, Zhaopeng; Wang, Shasha; Qu, Chengli; Chen, Lingxin] Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China; [Chen, Zhaopeng; Wang, Shasha; Qu, Chengli; Chen, Lingxin] YICCAS, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China; [Wang, Shasha] Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China
通讯作者Chen, ZP (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China. zhpchen@yic.ac.cn
中文摘要Based on the catalytic etching of gold nanoparticles (AuNPs), a label-free colorimetric probe was developed for the detection of Cu2+ in aqueous solutions. AuNPs were first stabilized by hexadecyltrimethylammonium bromide in NH3-NH4Cl (0.6 M/0.1 M) solutions. Then thiosulfate (S2O32-) ions were introduced and AuNPs were gradually dissolved by dissolved oxygen. With the further addition of Cu2+, Cu(NH3)(4)(2+) oxidized AuNPs to produce Au(S2O3)(2)(3-) and Cu(S2O3)(3)(5-), while the later was oxidized to Cu(NH3)(4)(2+) again by dissolved oxygen. The dissolving rate of AuNPs was thereby remarkably promoted and Cu2+ acted as the catalyst. The process went on due to the sufficient supply of dissolved oxygen and AuNPs were rapidly etched. Meanwhile, a visible color change from red to colorless was observed. Subsequent tests confirmed such a non-aggregation-based method as a sensitive (LOD= 5.0 nM or 032 ppb) and selective (at least 100-fold over other metal ions except for Pb2+ and Mn2+) way for the detection of Cu2+ (linear range, 10-80 nM). Moreover, our results show that the color change induced by 40 nM Cu2+ can be easily observed by naked eyes, which is particularly applicable to fast on-site investigations. (C) 2013 Elsevier B.V. All rights reserved.
英文摘要Based on the catalytic etching of gold nanoparticles (AuNPs), a label-free colorimetric probe was developed for the detection of Cu2+ in aqueous solutions. AuNPs were first stabilized by hexadecyltrimethylammonium bromide in NH3-NH4Cl (0.6 M/0.1 M) solutions. Then thiosulfate (S2O32-) ions were introduced and AuNPs were gradually dissolved by dissolved oxygen. With the further addition of Cu2+, Cu(NH3)(4)(2+) oxidized AuNPs to produce Au(S2O3)(2)(3-) and Cu(S2O3)(3)(5-), while the later was oxidized to Cu(NH3)(4)(2+) again by dissolved oxygen. The dissolving rate of AuNPs was thereby remarkably promoted and Cu2+ acted as the catalyst. The process went on due to the sufficient supply of dissolved oxygen and AuNPs were rapidly etched. Meanwhile, a visible color change from red to colorless was observed. Subsequent tests confirmed such a non-aggregation-based method as a sensitive (LOD= 5.0 nM or 032 ppb) and selective (at least 100-fold over other metal ions except for Pb2+ and Mn2+) way for the detection of Cu2+ (linear range, 10-80 nM). Moreover, our results show that the color change induced by 40 nM Cu2+ can be easily observed by naked eyes, which is particularly applicable to fast on-site investigations. (C) 2013 Elsevier B.V. All rights reserved.
学科主题Chemistry, Analytical
研究领域[WOS]Chemistry
关键词[WOS]DNA-BINDING MOLECULES ; THIOSULFATE SOLUTIONS ; IONS ; ACID ; SPECTROMETRY ; AGGREGATION ; APTAMER ; AMMONIA ; SAMPLES ; PROBES
收录类别SCI
资助信息Department of Science and Technology of Shandong Province [BS2009DX006, 2008GG20005005]; NSFC [21275158]; CAS [KZCX2-YW-JS208]; CAS
原文出处http://dx.doi.org/10.1016/j.talanta.2013.01.065
语种英语
WOS记录号WOS:000320476600006
公开日期2014-07-08
源URL[http://ir.yic.ac.cn/handle/133337/6960]  
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.Yantai Univ, Sch Environm & Mat Engn, Yantai 264003, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China
3.YICCAS, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China
4.Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Ruili,Chen, Zhaopeng,Wang, Shasha,et al. Colorimetric sensing of copper(II) based on catalytic etching of gold nanoparticles[J]. TALANTA,2013,112:37-42.
APA Liu, Ruili,Chen, Zhaopeng,Wang, Shasha,Qu, Chengli,Chen, Lingxin,&Wang, Zhuo.(2013).Colorimetric sensing of copper(II) based on catalytic etching of gold nanoparticles.TALANTA,112,37-42.
MLA Liu, Ruili,et al."Colorimetric sensing of copper(II) based on catalytic etching of gold nanoparticles".TALANTA 112(2013):37-42.

入库方式： OAI收割

来源：烟台海岸带研究所

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