A facile one-step electrochemical fabrication of reduced graphene oxide-mutilwall carbon nanotubes-phospotungstic acid composite for dopamine sensing

doi:10.1016/j.jelechem.2013.01.001

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	A facile one-step electrochemical fabrication of reduced graphene oxide-mutilwall carbon nanotubes-phospotungstic acid composite for dopamine sensing
	Ling, Yun-Yun 1; Huang, Qin-An 1; Zhu, Ming-Shan 2; Feng, De-Xiang 1; Li, Xiang-Zi 1; Wei, Yan 1
刊名	JOURNAL OF ELECTROANALYTICAL CHEMISTRY
	2013-03-15
卷号	693 页码:9-15
关键词	Nanocomposite Reduced Graphene Oxide Mutilwall Carbon Nanotubes Phospotungstic Acid Dopamine Sensing
ISSN号	1572-6657
DOI	10.1016/j.jelechem.2013.01.001
英文摘要	A novel one-step electrochemical method is developed to fabricate the composite of reduced graphene oxide-mutilwall carbon nanotubes-phospotungstic acid (RGO-MWNTs-PTA) on electrodes and used for the detection of dopamine (DA) in the presence of high concentrations of ascorbic acid (AA). Comparing with RGO, PTA, RGO-PTA, RGO-MWNTs, MWNTs-PTA modified electrodes, the RGO-MWNTs-PTA modified electrode is more sensitive and selective to DA due to a synergistic effect. The synergistic effect results from: (i) the enlarged area of electrodes due to the intercalation of mutilwall carbon nanotubes between the stacked reduced graphene oxide with associated large electrochemical active sites and 3D nano-structured RGO-MWNTs covered by numerous PTA particles; (ii) the improved conductivity through the formation of a 3D network aided by mutilwall carbon nanotubes; (iii) the accelerated electron transfer rates which is due to aromatic pi-pi stacking and electrostatic attraction between positively-charged DA and negatively-charged RGO-MWNTs-PTA-modified electrode. The sensing performance of RGO-MWNTs-PTA-modified electrode is investigated by differential pulse voltammetry (DPV), revealing a linear range of 0.5-20 mu M with a detection limit of 1.14 mu M (3 sigma method). (C) 2013 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000317445800002
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/42178]
专题	中国科学院化学研究所
通讯作者	Wei, Yan
作者单位	1.Wannan Med Coll, Dept Chem, Wuhu 241002, Peoples R China 2.Chinese Acad Sci, Inst Chem, CAS Key Lab Colloid Interface & Chem Thermodynam, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Ling, Yun-Yun,Huang, Qin-An,Zhu, Ming-Shan,et al. A facile one-step electrochemical fabrication of reduced graphene oxide-mutilwall carbon nanotubes-phospotungstic acid composite for dopamine sensing[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY,2013,693:9-15.
APA	Ling, Yun-Yun,Huang, Qin-An,Zhu, Ming-Shan,Feng, De-Xiang,Li, Xiang-Zi,&Wei, Yan.(2013).A facile one-step electrochemical fabrication of reduced graphene oxide-mutilwall carbon nanotubes-phospotungstic acid composite for dopamine sensing.JOURNAL OF ELECTROANALYTICAL CHEMISTRY,693,9-15.
MLA	Ling, Yun-Yun,et al."A facile one-step electrochemical fabrication of reduced graphene oxide-mutilwall carbon nanotubes-phospotungstic acid composite for dopamine sensing".JOURNAL OF ELECTROANALYTICAL CHEMISTRY 693(2013):9-15.