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Shape-controllable ZnO nanostructures based on synchronously electrochemically reduced graphene oxide and their morphology-dependent electrochemical performance
Yang, Tao1; Chen, Meijing1; Kong, Qianqian1; Wang, Xinxing1; Guo, Xiuhong1; Li, Weihua2,3; Jiao, Kui1
2015-11-10
发表期刊ELECTROCHIMICA ACTA
卷号182期号:2015页码:1037-1045
文章类型Article
摘要Since controlling substrates can program the electrochemical properties, many researchers have devoted to investigate the corresponding mechanism. However, up to now, the effects of substrate (such as morphology, size, material composition) on the performance of electrochemical sensors have been mainly focused on metal platform, while the investigation about metal oxide substrate has not been reported in detail. Zinc oxide (ZnO) is a technologically important semiconducting material with large band gap energy between 3.2 and 3.4 eV at room temperature which has attracted widespread attentions. In previous reports, the nanostructured ZnO was randomly formed on graphene layers. The control of morphology or size of nanostructures is a prerequisite for the nanostructure for fabricating various types of nanocomposites. Here, we used graphene oxide (GNO) as the supporting material for constructing a series of synchronously electrochemically reduced graphene oxide and zinc oxide composites (rGNO-ZnO) with different morphologies for comparing their morphology-dependent electrochemical sensing behaviors. The experimental parameters, such as the electrodeposition potential, time, and concentration of electrolyte, would influence the composite morphology and further bring different electrochemical sensing ability. Among them, rGNO-ZnO with nanowalls morphology (noted GZNWs), obtained from the conditions of 0.1 M Zn(NO3)(2) electrolyte, -1.0 V electrodeposition potential and 30 min electrodeposition time, presented an optimal ability for DNA detection and 2, 4, 6-Trinitrotoluene (TNT) electrocatalysis. The fine nanowall structure may be able to provide more accessible sites, and the synergistic effect between rGNO and ZnO may enlarge the electrochemical activity. The electrochemical DNA sensor based on GZNWs exhibited the steepest slope with the detection range, as well as the highest sensitivity when compared with other electrodeposition potentials. In order to further explore the other electrochemical performances (for instance the electrocatalysis), the GZNWs was used to detect the nitroaromatic compound (such as 2, 4, 6-Trinitrotoluene, TNT). It had reached the aim of improving the sensitivity of their detection. (C) 2015 Elsevier Ltd. All rights reserved.
关键词Graphene Zinc Oxide Electrodeposition Dna Sensor 2 4 6-trinitrotoluene
DOI10.1016/j.electacta.2015.09.158
收录类别SCI
语种英语
WOS记录号WOS:000365075800127
引用统计
被引频次:9[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/337002/82296
专题海洋腐蚀与防护研究发展中心
作者单位1.Qingdao Univ Sci & Technol, Key Lab Sensor Anal Tumor Marker, Shandong Prov Key Lab Biochem Anal, Coll Chem & Mol Engn,Educ Minist, Qingdao 266042, Peoples R China
2.Qingdao Technol Univ, Cooperat Innovat Ctr Engn Construct & Safety Shan, Qingdao 266033, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
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GB/T 7714
Yang, Tao,Chen, Meijing,Kong, Qianqian,et al. Shape-controllable ZnO nanostructures based on synchronously electrochemically reduced graphene oxide and their morphology-dependent electrochemical performance[J]. ELECTROCHIMICA ACTA,2015,182(2015):1037-1045.
APA Yang, Tao.,Chen, Meijing.,Kong, Qianqian.,Wang, Xinxing.,Guo, Xiuhong.,...&Jiao, Kui.(2015).Shape-controllable ZnO nanostructures based on synchronously electrochemically reduced graphene oxide and their morphology-dependent electrochemical performance.ELECTROCHIMICA ACTA,182(2015),1037-1045.
MLA Yang, Tao,et al."Shape-controllable ZnO nanostructures based on synchronously electrochemically reduced graphene oxide and their morphology-dependent electrochemical performance".ELECTROCHIMICA ACTA 182.2015(2015):1037-1045.
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