Chemical redox-regulated mesoporous silica-coated gold nanorods for colorimetric probing of Hg(2+) and S(2-)
文献类型：期刊论文
| 作者 | Wang, Wenhai ; Chen, Zhaopeng; Chen, Lingxin
|
| 刊名 | ANALYST
 |
| 出版日期 | 2011 |
| 卷号 | 136期号:1页码:174-178 |
| 关键词 | AQUEOUS-SOLUTIONS OPTICAL-DETECTION DYE DISPLACEMENT NAKED-EYE NANOPARTICLES SULFIDE DNA MERCURY ASSAY POLYMER |
| ISSN号 | 0003-2654 |
| 通讯作者 | Chen, ZPChen, LX, Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc, 17 Chunhui Rd, Yantai 264003, Peoples R China. dr.bingyan@gmail.com ; lxchen@yic.ac.cn |
| 中文摘要 | The past a few years have witnessed the wide use of metallic nanoparticles as ideal reporters for colorimetric detection, which generally involves an analyte-triggered alteration of aggregation degree of applied nanoparticles, and thus the change of colloidal color. However, these aggregation-based colorimetric probe are associated with a number of drawbacks, including poor stability of nanoaggregates, requirement of complicated functionalization and non-linearity of output signals. To address these problems, we herein employ mesoporous silica-coated gold nanorods ( MS AuNRs) as novel nanocomposites for non-aggregation-based label-free colorimetric sensing relying on their chemical redox-modulated surface chemistry. In our sensing system, Hg(2+) ions are reduced to Hg(0) depositing on the surface of MS AuNPs and result in a great color change of MS AuNRs, while the subsequent introduction of S(2-) leads to a reverse process owing to the extraction of Hg(0) by S(2-). The experimental results for colorimetric sensing of Hg(2+) and S(2-) imply considerable sensitivity and specificity, suggesting the high potential of our approach for rapid environmental monitoring and bioanalysis in the future. |
| 学科主题 | Chemistry |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China[20975089]; Department of Science and Technology of Shandong Province[2008GG20005005, BS2009DX006]; Department of Science and Technology of Yantai City of China[2007156]; National Basic Research Program of China (973 Program)[2010CB933504]; Chinese Academy of Sciences |
| 语种 | 英语 |
| 公开日期 | 2011-11-11 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/5099]  |
| 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 烟台海岸带研究所_近岸生态与环境实验室 烟台海岸带研究所_山东省海岸带环境工程技术研究中心 |
| 通讯作者 | Chen, Lingxin |
| 推荐引用方式 GB/T 7714 | Wang, Wenhai,Chen, Zhaopeng,Chen, Lingxin. Chemical redox-regulated mesoporous silica-coated gold nanorods for colorimetric probing of Hg(2+) and S(2-)[J]. ANALYST,2011,136(1):174-178. |
| APA | Wang, Wenhai,Chen, Zhaopeng,&Chen, Lingxin.(2011).Chemical redox-regulated mesoporous silica-coated gold nanorods for colorimetric probing of Hg(2+) and S(2-).ANALYST,136(1),174-178. |
| MLA | Wang, Wenhai,et al."Chemical redox-regulated mesoporous silica-coated gold nanorods for colorimetric probing of Hg(2+) and S(2-)".ANALYST 136.1(2011):174-178. |
入库方式： OAI收割
来源：烟台海岸带研究所
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