Fenton-like Reaction-Mediated Etching of Gold Nanorods for Visual Detection of Co2+
文献类型：期刊论文
| 作者 | Chen, Zhaopeng ; Pan, Dawei; Chen, Lingxin; Zhang, Zhiyang
|
| 刊名 | LANGMUIR
 |
| 出版日期 | 2015-01-13 |
| 卷号 | 31期号:1页码:643-650 |
| 关键词 | COLORIMETRIC DETECTION SUPEROXIDE-DISMUTASE HYDROGEN-PEROXIDE FLUORESCENT-PROBE AQUEOUS-SOLUTION QUANTUM DOTS COBALT ION NANOPARTICLES COPPER MECHANISM |
| ISSN号 | 0743-7463 |
| 产权排序 | [Zhang, Zhiyang; Chen, Zhaopeng; Pan, Dawei; Chen, Lingxin] Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China; [Zhang, Zhiyang; Chen, Zhaopeng; Pan, Dawei; Chen, Lingxin] YICCAS, Shandong Prov Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China; [Zhang, Zhiyang] 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 Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China. zhpchen@yic.ac.cn ; lxchen@yic.ac.cn |
| 中文摘要 | We have proposed a Fenton-like reaction-mediated etching of gold nanorods and applied it to the sensitive visual detection of Co2+ ions. With the presence of bicarbonate (HCO3-) and hydrogen peroxide(H2O2), Co2+ ions trigger a Fenton-like reaction, resulting in the generation of superoxide radical (O-2(center dot-)). As a result, the gold nanorods are gradually etched by O-2(center dot-) in the presence of SCN-, accompanied by an obvious color change from green to red. The gold nanorods etching process preferentially occurs along the longitudinal direction, which is observed by transmission electron microscope. The etching mechanism is carefully proved by investigating the effects of different radical scavengers (e.g., dimethyl sulfoxide). The auto-oxidation of hydroxylamine assay further confirms the mechanism. Then, the main factors, including reactants concentrations, temperature, and incubation time, are specifically investigated. Under optimized conditions, we get an excellent sensing performance for Co2+ with a lower detection limit of 1.0 nM via a spectrophotometer and a visual detection limit of 40 nM. In addition, this principle may provide a new concept of intermediate-mediated etching of nanoparticles for sensing. |
| 学科主题 | Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Department of Science and Technology of Shandong Province [BS2009DX006] ; NSFC [21275158] ; SRF for ROCS ; 100 Talents Program of the CAS |
| 关键词[WOS] | COLORIMETRIC DETECTION ; SUPEROXIDE-DISMUTASE ; HYDROGEN-PEROXIDE ; FLUORESCENT-PROBE ; AQUEOUS-SOLUTION ; QUANTUM DOTS ; COBALT ION ; NANOPARTICLES ; COPPER ; MECHANISM |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000348085900080 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/8665]  |
| 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_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 | Chen, Zhaopeng,Pan, Dawei,Chen, Lingxin,et al. Fenton-like Reaction-Mediated Etching of Gold Nanorods for Visual Detection of Co2+[J]. LANGMUIR,2015,31(1):643-650. |
| APA | Chen, Zhaopeng,Pan, Dawei,Chen, Lingxin,&Zhang, Zhiyang.(2015).Fenton-like Reaction-Mediated Etching of Gold Nanorods for Visual Detection of Co2+.LANGMUIR,31(1),643-650. |
| MLA | Chen, Zhaopeng,et al."Fenton-like Reaction-Mediated Etching of Gold Nanorods for Visual Detection of Co2+".LANGMUIR 31.1(2015):643-650. |
入库方式： OAI收割
来源：烟台海岸带研究所
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