Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
| A functional graphene oxide-ionic liquid composites-gold nanoparticle sensing platform for ultrasensitive electrochemical detection of Hg2+ | |
Zhou, Na; Li, Jinhua ; Chen, Hao; Liao, Chunyang; Chen, Lingxin
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| 发表期刊 | ANALYST
 |
| ISSN | 0003-2654 |
| 2013 | |
| 卷号 | 138期号:4页码:1091-1097 |
| 关键词 | Stripping Voltammetric Determination Speciation Analysis Aqueous-solution Mercury(Ii) Film Electrode Nanocomposite Fluorescent Performance Reduction |
| 产权排序 | [Zhou, Na; Li, Jinhua; Chen, Hao; Liao, Chunyang; Chen, Lingxin] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China |
| 通讯作者 | Chen, LX (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China. [email protected] |
| 作者部门 | 中科院海岸带环境过程与生态修复重点实验室 |
| 英文摘要 | A simple and sensitive electrochemical assay strategy of stripping voltammetry for mercury ions (Hg2+) detection is described based on the synergistic effect between ionic liquid functionalized graphene oxide (GO-IL) and gold nanoparticles (AuNPs). The AuNPs-GO-IL modified onto glassy carbon electrode (GCE) resulted in highly enhanced electron conductive nanostructured membrane and large electroactive surface area, which was excellently examined by scanning electron microscopy and cyclic voltammetry. After accumulating Hg2+, anodic stripping voltammetry (ASV) was performed, and differential pulse voltammetry (DPV) was employed for signal recording of Hg2+. Several main experimental parameters were optimized, i.e., deposition potential and time of AuNPs were -0.2 V and 180 s, respectively, and accumulation potential and time of Hg2+ were -0.3 V and 660 s, respectively. Under the optimal conditions, this AuNPs-GO-IL-GCE sensor attained a good linearity in a wide range of 0.1-100 nM (R = 0.9808) between the concentration of the Hg2+ standard and peak current. The limit of detection was estimated to be 0.03 nM at a signal-to-noise ratio of 3 sigma. A variety of common coexistent ions in water samples were investigated, showing no obvious interferences on the Hg2+ detection. The practical application of the proposed sensor has been carried out and demonstrated as feasible for determination of trace levels of Hg2+ in drinking and environmental water samples.; A simple and sensitive electrochemical assay strategy of stripping voltammetry for mercury ions (Hg2+) detection is described based on the synergistic effect between ionic liquid functionalized graphene oxide (GO-IL) and gold nanoparticles (AuNPs). The AuNPs-GO-IL modified onto glassy carbon electrode (GCE) resulted in highly enhanced electron conductive nanostructured membrane and large electroactive surface area, which was excellently examined by scanning electron microscopy and cyclic voltammetry. After accumulating Hg2+, anodic stripping voltammetry (ASV) was performed, and differential pulse voltammetry (DPV) was employed for signal recording of Hg2+. Several main experimental parameters were optimized, i.e., deposition potential and time of AuNPs were -0.2 V and 180 s, respectively, and accumulation potential and time of Hg2+ were -0.3 V and 660 s, respectively. Under the optimal conditions, this AuNPs-GO-IL-GCE sensor attained a good linearity in a wide range of 0.1-100 nM (R = 0.9808) between the concentration of the Hg2+ standard and peak current. The limit of detection was estimated to be 0.03 nM at a signal-to-noise ratio of 3 sigma. A variety of common coexistent ions in water samples were investigated, showing no obvious interferences on the Hg2+ detection. The practical application of the proposed sensor has been carried out and demonstrated as feasible for determination of trace levels of Hg2+ in drinking and environmental water samples. |
| 文章类型 | Article |
| 资助机构 | Scientific Research Foundation for the Returned Overseas Chinese Scholars; State Education Ministry; National Natural Science Foundation of China [21275158, 21105117, 20907039]; Innovation Projects of the Chinese Academy of Sciences [KZCX2-EW-206]; 100 Talents Program of the Chinese Academy of Sciences |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | STRIPPING VOLTAMMETRIC DETERMINATION ; SPECIATION ANALYSIS ; AQUEOUS-SOLUTION ; MERCURY(II) ; ELECTRODE ; FILM ; NANOCOMPOSITE ; FLUORESCENT ; PERFORMANCE ; REDUCTION |
| 研究领域[WOS] | Chemistry |
| WOS记录号 | WOS:000313805200019 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/6586 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室 中国科学院海岸带环境过程与生态修复重点实验室_污染过程与控制实验室 |
| 作者单位 | Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Na,Li, Jinhua,Chen, Hao,et al. A functional graphene oxide-ionic liquid composites-gold nanoparticle sensing platform for ultrasensitive electrochemical detection of Hg2+[J]. ANALYST,2013,138(4):1091-1097. |
| APA | Zhou, Na,Li, Jinhua,Chen, Hao,Liao, Chunyang,&Chen, Lingxin.(2013).A functional graphene oxide-ionic liquid composites-gold nanoparticle sensing platform for ultrasensitive electrochemical detection of Hg2+.ANALYST,138(4),1091-1097. |
| MLA | Zhou, Na,et al."A functional graphene oxide-ionic liquid composites-gold nanoparticle sensing platform for ultrasensitive electrochemical detection of Hg2+".ANALYST 138.4(2013):1091-1097. |
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