Fabrication of Bismuth/Multi-walled Carbon Nanotube Composite Modified Glassy Carbon Electrode for Determination of Cobalt

	Fabrication of Bismuth/Multi-walled Carbon Nanotube Composite Modified Glassy Carbon Electrode for Determination of Cobalt
	Wang Yuane 1,2,3; Pan Dawei 1; Li Xinmin 1; Qin Wei 1,4
	2009-12-01
发表期刊	CHINESE JOURNAL OF CHEMISTRY
ISSN	1001-604X
卷号	27 期号:12 页码:2385-2391
文章类型	Article
摘要	A bismuth/multi-walled carbon nanotube (Bi/MWNT) composite modified electrode for determination of cobalt by differential pulse adsorptive cathodic stripping voltammetry is described. The electrode is fabricated by potentiostatic pre-plating bismuth film on an MWNT modified glassy carbon (GC) electrode. The Bi/MWNT composite modified electrode exhibits enhanced sensitivity for cobalt detection as compared with the bare GC, MWNT modified and bismuth film electrodes. Numerous key experimental parameters have been examined for optimum analytical performance of the proposed electrode. With an adsorptive accumulation of the Co(II)-dimethylglyoxime complex at -0.8 V for 200 s, the reduction peak current is proportional to the concentration of cobalt in the range of 4.0x10(-11)-1.0x10(-7) mol/L with a lower detection limit of 8.1x10(-11) mol/L. The proposed method has been applied Successfully to cobalt determination in seawater and lake water samples.; A bismuth/multi-walled carbon nanotube (Bi/MWNT) composite modified electrode for determination of cobalt by differential pulse adsorptive cathodic stripping voltammetry is described. The electrode is fabricated by potentiostatic pre-plating bismuth film on an MWNT modified glassy carbon (GC) electrode. The Bi/MWNT composite modified electrode exhibits enhanced sensitivity for cobalt detection as compared with the bare GC, MWNT modified and bismuth film electrodes. Numerous key experimental parameters have been examined for optimum analytical performance of the proposed electrode. With an adsorptive accumulation of the Co(II)-dimethylglyoxime complex at -0.8 V for 200 s, the reduction peak current is proportional to the concentration of cobalt in the range of 4.0x10(-11)-1.0x10(-7) mol/L with a lower detection limit of 8.1x10(-11) mol/L. The proposed method has been applied Successfully to cobalt determination in seawater and lake water samples.
关键词	Multi-walled Carbon Nanotube Bismuth Film Electrode Composite Electrode Cobalt Adsorptive Stripping Analysis Voltammetry
学科领域	Chemistry, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000273627600014
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/2636
专题	海洋生态与环境科学重点实验室
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res Sustainable Dev, Environm Chem Lab, Yantai 264003, Shandong, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Shandong, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 4.Yantai Univ, Sch Oceanol, Yantai 264005, Shandong, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Wang Yuane,Pan Dawei,Li Xinmin,et al. Fabrication of Bismuth/Multi-walled Carbon Nanotube Composite Modified Glassy Carbon Electrode for Determination of Cobalt[J]. CHINESE JOURNAL OF CHEMISTRY,2009,27(12):2385-2391.
APA	Wang Yuane,Pan Dawei,Li Xinmin,&Qin Wei.(2009).Fabrication of Bismuth/Multi-walled Carbon Nanotube Composite Modified Glassy Carbon Electrode for Determination of Cobalt.CHINESE JOURNAL OF CHEMISTRY,27(12),2385-2391.
MLA	Wang Yuane,et al."Fabrication of Bismuth/Multi-walled Carbon Nanotube Composite Modified Glassy Carbon Electrode for Determination of Cobalt".CHINESE JOURNAL OF CHEMISTRY 27.12(2009):2385-2391.

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