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A functional graphene oxide-ionic liquid composites-gold nanoparticle sensing platform for ultrasensitive electrochemical detection of Hg2+

文献类型：期刊论文

作者Zhou, Na; Li, Jinhua; Chen, Hao; Liao, Chunyang; Chen, Lingxin
刊名ANALYST
出版日期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
ISSN号0003-2654
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. lxchen@yic.ac.cn
文献子类Article
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.
学科主题Chemistry, Analytical
URL标识查看原文
WOS关键词STRIPPING VOLTAMMETRIC DETERMINATION ; SPECIATION ANALYSIS ; AQUEOUS-SOLUTION ; MERCURY(II) ; ELECTRODE ; FILM ; NANOCOMPOSITE ; FLUORESCENT ; PERFORMANCE ; REDUCTION
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000313805200019
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
公开日期2013-08-15
源URL[http://ir.yic.ac.cn/handle/133337/6587]  
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_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.

入库方式： OAI收割

来源：烟台海岸带研究所

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