中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Hybrid tin oxide-SWNT nanostructures based gas sensor

文献类型:期刊论文

作者Zhang, T(张珽)
刊名ELECTROCHIMICA ACTA
出版日期2013-03-01
卷号92期号:0页码:484-490
关键词Single-walled carbon nanotube Tin oxide Gas sensor Electrochemical deposition Chemiresistor Field effect transistor
通讯作者Myung, NV
英文摘要A facile electrochemical functionalization method was utilized to decorate single-walled carbon nanotubes (SWNTs) with tin oxide and their gas sensing performance toward various analytes (NH3, NO2, H-2, H2S, acetone, and water vapor) was evaluated at room temperature. Tin oxy-hydroxide was sitespecifically precipitated on the surface of SWNTs because of an increase in local pH during electrochemical reduction of nitrate to nitrite ions. By adjusting the amount of charge passed during deposition, the amount of tin oxide deposited on SWNTs was controlled, which altered the electronic and gas sensing properties of the nanostructures. The resulting hybrid nanostructures showed excellent sensitivities upon exposure to trace amounts of both oxidizing gases (limit of detection (LOD) of 25 ppbv for NO2) and reducing gases (LOD of 10 ppmv for H-2) at room temperature. The enhanced sensing performance was due to the charge transfer between the surface active tin oxide nanoparticles and SWNTs, with the direction of charge transfer depending on the analyte gas. This approach can be applied to fabricate other hybrid metal oxide-SWNTs nanostructures to create highly sensitive gas sensor arrays. (C) 2013 Elsevier Ltd. All rights reserved.
收录类别SCI ; EI
语种英语
WOS记录号WOS:000316520100063
公开日期2014-01-13
源URL[http://ir.sinano.ac.cn/handle/332007/1332]  
专题苏州纳米技术与纳米仿生研究所_纳米研究国际实验室_张珽团队
推荐引用方式
GB/T 7714
Zhang, T. Hybrid tin oxide-SWNT nanostructures based gas sensor[J]. ELECTROCHIMICA ACTA,2013,92(0):484-490.
APA Zhang, T.(2013).Hybrid tin oxide-SWNT nanostructures based gas sensor.ELECTROCHIMICA ACTA,92(0),484-490.
MLA Zhang, T."Hybrid tin oxide-SWNT nanostructures based gas sensor".ELECTROCHIMICA ACTA 92.0(2013):484-490.

入库方式: OAI收割

来源:苏州纳米技术与纳米仿生研究所

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