Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
| Colorimetric sensing of copper(II) based on catalytic etching of gold nanoparticles | |
Liu, Ruili1; Chen, Zhaopeng2,3 ; Wang, Shasha2,3,4; Qu, Chengli2,3; Chen, Lingxin2,3; Wang, Zhuo1
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| 发表期刊 | TALANTA
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| ISSN | 0039-9140 |
| 2013-08-15 | |
| 卷号 | 112页码:37-42 |
| 关键词 | Gold Nanoparticle Colorimetric Copper Ion Surface Plasmon Resonance |
| 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 |
| 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.; 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. |
| 文章类型 | Article |
| 资助机构 | Department of Science and Technology of Shandong Province [BS2009DX006, 2008GG20005005]; NSFC [21275158]; CAS [KZCX2-YW-JS208]; CAS |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | DNA-BINDING MOLECULES ; THIOSULFATE SOLUTIONS ; IONS ; ACID ; SPECTROMETRY ; AGGREGATION ; APTAMER ; AMMONIA ; SAMPLES ; PROBES |
| 研究领域[WOS] | Chemistry |
| WOS记录号 | WOS:000320476600006 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/6960 |
| 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.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. |
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