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Improving gas-sensing properties of electrospun In2O3 nanotubes by Mg acceptor doping
Zhao, Changhui; Huang, Baoyu; Xie, Erqing; Zhou, Jinyuan; Zhang, Zhenxing
2015-02
Source PublicationSENSORS AND ACTUATORS B-CHEMICAL   Impact Factor & Quartile Of Published Year  The Latest Impact Factor & Quartile
ISSN0925-4005
Volume207Issue:part APages:313-320
Abstract

Nanostructured In2O3 has attracted extensive attention due to its promising chemical stability and excellent gas-sensing properties. In this work, Mg-doped In2O3 nanotubes (Mg-In2O3 NTs) have been prepared by calcination of precursor fibers derived from a facile electrospinning method. All samples are characterized by X-ray diffraction, transmission electron microscopy, and energy dispersive X-ray spectroscopy, which clearly show the Mg dopants in In2O3 NTs. Despite the role of substitutional Mg in In2O3 as an acceptor, the Mg-In2O3 NTs have shown n-type conductivity in H2S and ethanol, respectively. As is expected, the sensor using Mg-In2O3 NTs exhibits a high sensitivity and selectivity toward H2S at a low operating temperature of 150 degrees C, and it maintains a relatively high response toward ethanol at 250-300 degrees C, which presents a significant increase in the sensor response compared to the sensor based on primary In2O3 NTs. Furthermore, a possible enhancement mechanism in Mg-In2O3 NT-based sensors is proposed from the oxygen vacancies and the kinetics of gas adsorption-desorption processes. (C) 2014 Elsevier B.V. All rights reserved.

KeywordIn2o3 Nanotubes Mg Dopants Gas Sensors Oxygen Vacancies
Subject AreaChemistry ; Electrochemistry ; Instruments & Instrumentation
PublisherELSEVIER
DOI10.1016/j.snb.2014.10.087
Publication PlaceLAUSANNE
URL查看原文
Indexed BySCI ; SCIE
Language英语
First Inst
Funding Project国家自然科学基金项目
Project NumberNational Natural Science Foundation of China [61176058, U1232121, 51202100]
WOS IDWOS:000345895200039
Funding OrganizationNSFC
SubtypeArticle
Original Document TypeJournal article
EI ID20144600201462
DepartmentLanzhou Univ, Minist Educ, Key Lab Magnetism & Magnet Mat, Lanzhou 730000, Peoples R China
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/112257
Collection物理科学与技术学院
Corresponding AuthorXie, Erqing
Affiliation
Lanzhou Univ, Minist Educ, Key Lab Magnetism & Magnet Mat, Lanzhou 730000, Peoples R China
First Author AffilicationSchool of Physical Science and Technology
Corresponding Author AffilicationSchool of Physical Science and Technology
First Signature AffilicationSchool of Physical Science and Technology
Recommended Citation
GB/T 7714
Zhao, Changhui,Huang, Baoyu,Xie, Erqing,et al. Improving gas-sensing properties of electrospun In2O3 nanotubes by Mg acceptor doping[J]. SENSORS AND ACTUATORS B-CHEMICAL,2015,207(part A):313-320.
APA Zhao, Changhui,Huang, Baoyu,Xie, Erqing,Zhou, Jinyuan,&Zhang, Zhenxing.(2015).Improving gas-sensing properties of electrospun In2O3 nanotubes by Mg acceptor doping.SENSORS AND ACTUATORS B-CHEMICAL,207(part A),313-320.
MLA Zhao, Changhui,et al."Improving gas-sensing properties of electrospun In2O3 nanotubes by Mg acceptor doping".SENSORS AND ACTUATORS B-CHEMICAL 207.part A(2015):313-320.
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