Electrospinning Hetero-Nanofibers In2O3/SnO2 of Homotype Heterojunction with High Gas Sensing Activity
In2O3/SnO2 composite hetero-nanofibers were synthesized by an electrospinning technique for detecting indoor volatile organic gases. The physical and chemical properties of In2O3/SnO2 hetero-nanofibers were characterized and analyzed by X-ray diffraction (XRD), field emission scanning electron micro...
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MDPI AG
2017-08-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/17/8/1822 |
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doaj-47d907f712604c0290c300c9a0d0ff652020-11-24T21:34:42ZengMDPI AGSensors1424-82202017-08-01178182210.3390/s17081822s17081822Electrospinning Hetero-Nanofibers In2O3/SnO2 of Homotype Heterojunction with High Gas Sensing ActivityHaiying Du0PengJun Yao1Yanhui Sun2Jing Wang3Huisheng Wang4Naisen Yu5College of mechanical and Electronic Engineering, Dalian Minzu University, Dalian 116600, ChinaSchool of Educational Technology, Shenyang Normal University, Shenyang 110034, ChinaCollege of mechanical and Electronic Engineering, Dalian Minzu University, Dalian 116600, ChinaSchool of Electronic Science and Technology, Dalian University of Technology, Dalian 116023, ChinaSchool of Electronic Science and Technology, Dalian University of Technology, Dalian 116023, ChinaSchool of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, ChinaIn2O3/SnO2 composite hetero-nanofibers were synthesized by an electrospinning technique for detecting indoor volatile organic gases. The physical and chemical properties of In2O3/SnO2 hetero-nanofibers were characterized and analyzed by X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), Energy Dispersive X-Ray Spectroscopy (EDX), specific surface Brunauer–Emmett–Teller (BET) and X-ray photoelectron spectroscopy (XPS). Gas sensing properties of In2O3/SnO2 composite hetero-nanofibers were measured with six kinds of indoor volatile organic gases in concentration range of 0.5~50 ppm at the operating temperature of 275 °C. The In2O3/SnO2 composite hetero-nanofibers sensor exhibited good formaldehyde sensing properties, which would be attributed to the formation of n-n homotype heterojunction in the In2O3/SnO2 composite hetero-nanofibers. Finally, the sensing mechanism of the In2O3/SnO2 composite hetero-nanofibers was analyzed based on the energy-band principle.https://www.mdpi.com/1424-8220/17/8/1822electrospinningcomposite hetero-nanofibershomotype heterojunctionindoor volatile organic gasesgas sensing propertiesgas sensing mechanism |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Haiying Du PengJun Yao Yanhui Sun Jing Wang Huisheng Wang Naisen Yu |
| spellingShingle |
Haiying Du PengJun Yao Yanhui Sun Jing Wang Huisheng Wang Naisen Yu Electrospinning Hetero-Nanofibers In2O3/SnO2 of Homotype Heterojunction with High Gas Sensing Activity Sensors electrospinning composite hetero-nanofibers homotype heterojunction indoor volatile organic gases gas sensing properties gas sensing mechanism |
| author_facet |
Haiying Du PengJun Yao Yanhui Sun Jing Wang Huisheng Wang Naisen Yu |
| author_sort |
Haiying Du |
| title |
Electrospinning Hetero-Nanofibers In2O3/SnO2 of Homotype Heterojunction with High Gas Sensing Activity |
| title_short |
Electrospinning Hetero-Nanofibers In2O3/SnO2 of Homotype Heterojunction with High Gas Sensing Activity |
| title_full |
Electrospinning Hetero-Nanofibers In2O3/SnO2 of Homotype Heterojunction with High Gas Sensing Activity |
| title_fullStr |
Electrospinning Hetero-Nanofibers In2O3/SnO2 of Homotype Heterojunction with High Gas Sensing Activity |
| title_full_unstemmed |
Electrospinning Hetero-Nanofibers In2O3/SnO2 of Homotype Heterojunction with High Gas Sensing Activity |
| title_sort |
electrospinning hetero-nanofibers in2o3/sno2 of homotype heterojunction with high gas sensing activity |
| publisher |
MDPI AG |
| series |
Sensors |
| issn |
1424-8220 |
| publishDate |
2017-08-01 |
| description |
In2O3/SnO2 composite hetero-nanofibers were synthesized by an electrospinning technique for detecting indoor volatile organic gases. The physical and chemical properties of In2O3/SnO2 hetero-nanofibers were characterized and analyzed by X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), Energy Dispersive X-Ray Spectroscopy (EDX), specific surface Brunauer–Emmett–Teller (BET) and X-ray photoelectron spectroscopy (XPS). Gas sensing properties of In2O3/SnO2 composite hetero-nanofibers were measured with six kinds of indoor volatile organic gases in concentration range of 0.5~50 ppm at the operating temperature of 275 °C. The In2O3/SnO2 composite hetero-nanofibers sensor exhibited good formaldehyde sensing properties, which would be attributed to the formation of n-n homotype heterojunction in the In2O3/SnO2 composite hetero-nanofibers. Finally, the sensing mechanism of the In2O3/SnO2 composite hetero-nanofibers was analyzed based on the energy-band principle. |
| topic |
electrospinning composite hetero-nanofibers homotype heterojunction indoor volatile organic gases gas sensing properties gas sensing mechanism |
| url |
https://www.mdpi.com/1424-8220/17/8/1822 |
| work_keys_str_mv |
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