Simultaneous detection of trace Ag(I) and Cu(II) ions using homoepitaxially grown GaN micropillar electrode

doi:10.1016/j.aca.2019.11.010

IMR OpenIR

	Simultaneous detection of trace Ag(I) and Cu(II) ions using homoepitaxially grown GaN micropillar electrode
	Liu, Qingyun 1; Li, Jing 1; Yang, Wenjin 1; Zhang, Xinglai 1; Zhang, Cai 1; Labbe, Christophe 2; Portier, Xavier 2; Liu, Fei 3,4; Yao, Jinlei 5; Liu, Baodan 1
通讯作者	Liu, Baodan(baodanliu@hotmail.com)
	2020-03-01
发表期刊	ANALYTICA CHIMICA ACTA
ISSN	0003-2670
卷号	1100 页码:22-30
摘要	Driven by the motivation to quantitively control and monitor trace metal ions in water, the development of environmental-friendly electrodes with superior detection sensitivity is extremely important. In this work, we report the design of a stable, ultrasensitive and biocompatible electrode for the detection of trace Ag+ and Cu2+ ions by growing n-type GaN micropillars on conductive p-type GaN substrate. The electrochemical measurement based on cyclic voltammetry indicates that the GaN micropillars exhibit quasi-reversible and mass-controlled reaction in redox probe solution. In the application of trace Ag+ and Cu2+ determination, the GaN micropillars show superior sensitivity and excellent conductivity by presenting a detection limit of 3.3 ppb for Ag+ and 3.3 ppb for Cu2+. Comparative studies on the electrochemical response of GaN micropillars and GaN film in the simultaneous Ag+ and Cu2+ detection reveal that GaN micropillars show three orders of magnitude higher stripping peak current than GaN film. It is assumed that the microarray morphology with large active area and the hydrophilia nature of GaN micropillars are responsible for the excellent sensitivity. This work will open up some opportunities for GaN nanostructure electrodes in the application of trace metal ions detection. (C) 2019 Elsevier B.V. All rights reserved.
关键词	GaN micropillar arrays Homoepitaxial growth Electrochemistry Metal ion detection
资助者	National Natural Science Foundation of China ; Open Fund of the State Key Laboratory of Optoelectronic Materials and Technologies (Sun Yat-sen University) ; Basic Science Innovation Program of Shenyang National Laboratory for Materials Science
DOI	10.1016/j.aca.2019.11.010
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51702326,51872296] ; Open Fund of the State Key Laboratory of Optoelectronic Materials and Technologies (Sun Yat-sen University)[OEMT-2017-KF02] ; Basic Science Innovation Program of Shenyang National Laboratory for Materials Science[2017RP25]
WOS研究方向	Chemistry
WOS类目	Chemistry, Analytical
WOS记录号	WOS:000509341100003
出版者	ELSEVIER
引用统计	被引频次：19[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/136669
专题	中国科学院金属研究所
通讯作者	Liu, Baodan
作者单位	1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci SYNL, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Normandie Univ, CIMAP CNRS, CEA, ENSICAEN, 6 Bd Marechal Juin, F-14050 Caen 4, France 3.Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China 4.Sun Yat Sen Univ, Sch Elect & Informat Technol, Guangzhou 510275, Peoples R China 5.Suzhou Univ Sci & Technol, Sch Math & Phys, Jiangsu Key Lab Micro & Nano Heat Fluid Flow Tech, Suzhou 215009, Peoples R China
推荐引用方式 GB/T 7714	Liu, Qingyun,Li, Jing,Yang, Wenjin,et al. Simultaneous detection of trace Ag(I) and Cu(II) ions using homoepitaxially grown GaN micropillar electrode[J]. ANALYTICA CHIMICA ACTA,2020,1100:22-30.
APA	Liu, Qingyun.,Li, Jing.,Yang, Wenjin.,Zhang, Xinglai.,Zhang, Cai.,...&Liu, Baodan.(2020).Simultaneous detection of trace Ag(I) and Cu(II) ions using homoepitaxially grown GaN micropillar electrode.ANALYTICA CHIMICA ACTA,1100,22-30.
MLA	Liu, Qingyun,et al."Simultaneous detection of trace Ag(I) and Cu(II) ions using homoepitaxially grown GaN micropillar electrode".ANALYTICA CHIMICA ACTA 1100(2020):22-30.