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Improved NO2 sensing properties at low temperature using reduced graphene oxide nanosheet-In2O3 heterojunction nanofibers
Yan, Chao1; Lu, Hongbing1; Gao, Jianzhi1; Zhang, Ying2; Guo, Quanmin3; Ding, Haoxuan3; Wang, Yitao3; Wei, Fenfen1; Zhu, Gangqiang1; Yang, Zhibo1; Wang, Chunlan4
2018-04-15
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume741Pages:908-917
AbstractPure In2O3 and reduced graphene oxide (rGO)-In2O3 composite nanofibers are prepared by a facile electrospinning technique. Low-temperature gas-sensing properties to NO2 of the produced nanofibers are evaluated. Our results indicate that in comparison with pure In2O3 nanofibers, the rGO-In2O3 heterojunction nanofibers display much better sensing properties in response, selectivity and detection limit to NO2. Moreover, the weight ratios of rGO to In2O3 are used as a parameter to estimate the best gas-sensing properties of rGO-In2O3 nanofibers. Consequently, the heterojunction nanofibers with an optimized amount of rGO (2.2 wt%) exhibit the highest response of 42 to 5 ppm NO2 at the low operating temperature of 50 degrees C, which is 4.4 times higher than that of pristine In2O3. From our perspective, the enhanced sensing properties of the composite nanofibers can be mainly attributed to the formation of p-n heterojunctions between rGO and In2O3, and ultrahigh specific surface area as well as strong gas adsorption capacity of rGO nanosheets. These excellent gas-sensing properties make the rGO-In2O3 heterojunction nanofibers attractive to application for low-temperature NO2 gas sensors. (C) 2018 Elsevier B.V. All rights reserved.
KeywordIn2O3 Reduced graphene oxide Electrospinning p-n junctions Gas sensor
DOI10.1016/j.jallcom.2018.01.209
URLView the original
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000425530700113
PublisherELSEVIER SCIENCE SA
The Source to ArticleWOS
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Cited Times [WOS]:10   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionInstitute of Chinese Medical Sciences
Affiliation1.Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Shaanxi, Peoples R China;
2.Engn Univ PAP, Xian 710086, Shaanxi, Peoples R China;
3.Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England;
4.Xian Polytech Univ, Sch Sci, Xian 710048, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Yan, Chao,Lu, Hongbing,Gao, Jianzhi,et al. Improved NO2 sensing properties at low temperature using reduced graphene oxide nanosheet-In2O3 heterojunction nanofibers[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2018,741:908-917.
APA Yan, Chao.,Lu, Hongbing.,Gao, Jianzhi.,Zhang, Ying.,Guo, Quanmin.,...&Wang, Chunlan.(2018).Improved NO2 sensing properties at low temperature using reduced graphene oxide nanosheet-In2O3 heterojunction nanofibers.JOURNAL OF ALLOYS AND COMPOUNDS,741,908-917.
MLA Yan, Chao,et al."Improved NO2 sensing properties at low temperature using reduced graphene oxide nanosheet-In2O3 heterojunction nanofibers".JOURNAL OF ALLOYS AND COMPOUNDS 741(2018):908-917.
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