Simultaneous detection of trace Ag(I) and Cu(II) ions using homoepitaxially grown GaN micropillar electrode
文献类型：期刊论文
| 作者 | Liu, Qingyun1; Li, Jing1; Yang, Wenjin1; Zhang, Xinglai1; Zhang, Cai1; Labbe, Christophe2; Portier, Xavier2; Liu, Fei3,4; Yao, Jinlei5; Liu, Baodan1 |
| 刊名 | ANALYTICA CHIMICA ACTA
 |
| 出版日期 | 2020-03-01 |
| 卷号 | 1100页码:22-30 |
| 关键词 | GaN micropillar arrays Homoepitaxial growth Electrochemistry Metal ion detection |
| ISSN号 | 0003-2670 |
| DOI | 10.1016/j.aca.2019.11.010 |
| 通讯作者 | Liu, Baodan(baodanliu@hotmail.com) |
| 英文摘要 | 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. |
| 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 |
| 语种 | 英语 |
| WOS记录号 | WOS:000509341100003 |
| 出版者 | ELSEVIER |
| 资助机构 | 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 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/136668]  |
| 专题 | 金属研究所_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. |
入库方式： OAI收割
来源：金属研究所
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