Determination of sulfate-reducing bacteria with chemical conversion from ZnO nanorods arrays to ZnS arrays

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	Determination of sulfate-reducing bacteria with chemical conversion from ZnO nanorods arrays to ZnS arrays
	Qi, Peng1,2 ; Zhang, Dun 1; Wan, Yi 1,2
刊名	SENSORS AND ACTUATORS B-CHEMICAL
	2013-05-01
卷号	181 页码:274-279
关键词	Detection ZnO arrays ZnS arrays Sulfate-reducing bacteria
ISSN号	0925-4005
通讯作者	Zhang, D
中文摘要	This work presents a novel specific detection method for sulfate-reducing bacteria (SRB) based on sulfuration conversion from ZnO arrays to ZnS arrays. The sulfuration process was conducted in two steps. First, ZnO@ZnS intermediate nanocomposite arrays were formed by the sulfuration reaction between ZnO and sulfide, which is the characteristic enzymatic metabolism product of SRB. Next, unconverted ZnO cores were washed away in ammonia buffer solutions, leaving ZnS arrays on the surface of ITO substrates. The array conversion process can be used for SRB detection because the final state of ZnS arrays was highly related with the amount of accumulated sulfide, which was decided by the initial concentration of SRB. Electrochemical impedance spectroscopy has been used to optimize experimental conditions and detect SRB in aqueous solutions. This SRB detection method based on arrays conversion from ZnO to ZnS can avoid the use of biological recognition elements, which are expensive and easy to lose specific recognizing abilities. In addition, compared with the widely used MPN method which would take up to 15 days to accomplish the detection process, the proposed method can shorten the detection time greatly. (C) 2013 Elsevier B.V. All rights reserved.
英文摘要	This work presents a novel specific detection method for sulfate-reducing bacteria (SRB) based on sulfuration conversion from ZnO arrays to ZnS arrays. The sulfuration process was conducted in two steps. First, ZnO@ZnS intermediate nanocomposite arrays were formed by the sulfuration reaction between ZnO and sulfide, which is the characteristic enzymatic metabolism product of SRB. Next, unconverted ZnO cores were washed away in ammonia buffer solutions, leaving ZnS arrays on the surface of ITO substrates. The array conversion process can be used for SRB detection because the final state of ZnS arrays was highly related with the amount of accumulated sulfide, which was decided by the initial concentration of SRB. Electrochemical impedance spectroscopy has been used to optimize experimental conditions and detect SRB in aqueous solutions. This SRB detection method based on arrays conversion from ZnO to ZnS can avoid the use of biological recognition elements, which are expensive and easy to lose specific recognizing abilities. In addition, compared with the widely used MPN method which would take up to 15 days to accomplish the detection process, the proposed method can shorten the detection time greatly. (C) 2013 Elsevier B.V. All rights reserved.
学科主题	Chemistry ; Electrochemistry ; Instruments & Instrumentation
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation
研究领域[WOS]	Chemistry ; Electrochemistry ; Instruments & Instrumentation
关键词[WOS]	SENSITIZED SOLAR-CELLS ; NANOWIRE ARRAYS ; NANOSTRUCTURES ; GROWTH
收录类别	SCI
原文出处	10.1016/j.snb.2013.01.076
语种	英语
WOS记录号	WOS:000317941100039
公开日期	2014-07-17
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/16360]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
作者单位	1.Chinese Acad Sci, Inst Oceanol, Natl Engn Res Ctr Marine Corros Protect, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Qi, Peng,Zhang, Dun,Wan, Yi. Determination of sulfate-reducing bacteria with chemical conversion from ZnO nanorods arrays to ZnS arrays[J]. SENSORS AND ACTUATORS B-CHEMICAL,2013,181:274-279.
APA	Qi, Peng,Zhang, Dun,&Wan, Yi.(2013).Determination of sulfate-reducing bacteria with chemical conversion from ZnO nanorods arrays to ZnS arrays.SENSORS AND ACTUATORS B-CHEMICAL,181,274-279.
MLA	Qi, Peng,et al."Determination of sulfate-reducing bacteria with chemical conversion from ZnO nanorods arrays to ZnS arrays".SENSORS AND ACTUATORS B-CHEMICAL 181(2013):274-279.