Semiconductor Metal Oxides as Chemoresistive Sensors for Detecting Volatile Organic Compounds

Volatile organic compounds (VOCs), which originate from painting, oil refining and vehicle exhaust emissions, are hazardous gases that have significant effects on air quality and human health. The detection of VOCs is of special importance to environmental safety. Among the various detection methods...

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Main Authors: Tingting Lin, Xin Lv, Zhineng Hu, Aoshu Xu, Caihui Feng
Format: Article
Language:English
Published: MDPI AG 2019-01-01
Series:Sensors
Subjects:
Online Access:http://www.mdpi.com/1424-8220/19/2/233
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author Tingting Lin
Xin Lv
Zhineng Hu
Aoshu Xu
Caihui Feng
author_facet Tingting Lin
Xin Lv
Zhineng Hu
Aoshu Xu
Caihui Feng
author_sort Tingting Lin
collection DOAJ
description Volatile organic compounds (VOCs), which originate from painting, oil refining and vehicle exhaust emissions, are hazardous gases that have significant effects on air quality and human health. The detection of VOCs is of special importance to environmental safety. Among the various detection methods, chemoresistive semiconductor metal oxide gas sensors are considered to be the most promising technique due to their easy production, low cost and good portability. Sensitivity is an important parameter of gas sensors and is greatly affected by the microstructure, defects, catalyst, heterojunction and humidity. By adjusting the aforementioned factors, the sensitivity of gas sensors can be improved further. In this review, attention will be focused on how to improve the sensitivity of chemoresistive gas sensors towards certain common VOCs with respect to the five factors mentioned above.
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spelling doaj.art-f941301e23284a86a7b0699829cfe5662022-12-22T04:22:03ZengMDPI AGSensors1424-82202019-01-0119223310.3390/s19020233s19020233Semiconductor Metal Oxides as Chemoresistive Sensors for Detecting Volatile Organic CompoundsTingting Lin0Xin Lv1Zhineng Hu2Aoshu Xu3Caihui Feng4College of Instrumentation and Electrical Engineering, Jilin University, Changchun 130061, ChinaCollege of Instrumentation and Electrical Engineering, Jilin University, Changchun 130061, ChinaCollege of Instrumentation and Electrical Engineering, Jilin University, Changchun 130061, ChinaCollege of Instrumentation and Electrical Engineering, Jilin University, Changchun 130061, ChinaCollege of Instrumentation and Electrical Engineering, Jilin University, Changchun 130061, ChinaVolatile organic compounds (VOCs), which originate from painting, oil refining and vehicle exhaust emissions, are hazardous gases that have significant effects on air quality and human health. The detection of VOCs is of special importance to environmental safety. Among the various detection methods, chemoresistive semiconductor metal oxide gas sensors are considered to be the most promising technique due to their easy production, low cost and good portability. Sensitivity is an important parameter of gas sensors and is greatly affected by the microstructure, defects, catalyst, heterojunction and humidity. By adjusting the aforementioned factors, the sensitivity of gas sensors can be improved further. In this review, attention will be focused on how to improve the sensitivity of chemoresistive gas sensors towards certain common VOCs with respect to the five factors mentioned above.http://www.mdpi.com/1424-8220/19/2/233volatile organic compoundssemiconductormetal oxidegas sensorsensitivity
spellingShingle Tingting Lin
Xin Lv
Zhineng Hu
Aoshu Xu
Caihui Feng
Semiconductor Metal Oxides as Chemoresistive Sensors for Detecting Volatile Organic Compounds
Sensors
volatile organic compounds
semiconductor
metal oxide
gas sensor
sensitivity
title Semiconductor Metal Oxides as Chemoresistive Sensors for Detecting Volatile Organic Compounds
title_full Semiconductor Metal Oxides as Chemoresistive Sensors for Detecting Volatile Organic Compounds
title_fullStr Semiconductor Metal Oxides as Chemoresistive Sensors for Detecting Volatile Organic Compounds
title_full_unstemmed Semiconductor Metal Oxides as Chemoresistive Sensors for Detecting Volatile Organic Compounds
title_short Semiconductor Metal Oxides as Chemoresistive Sensors for Detecting Volatile Organic Compounds
title_sort semiconductor metal oxides as chemoresistive sensors for detecting volatile organic compounds
topic volatile organic compounds
semiconductor
metal oxide
gas sensor
sensitivity
url http://www.mdpi.com/1424-8220/19/2/233
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AT xinlv semiconductormetaloxidesaschemoresistivesensorsfordetectingvolatileorganiccompounds
AT zhinenghu semiconductormetaloxidesaschemoresistivesensorsfordetectingvolatileorganiccompounds
AT aoshuxu semiconductormetaloxidesaschemoresistivesensorsfordetectingvolatileorganiccompounds
AT caihuifeng semiconductormetaloxidesaschemoresistivesensorsfordetectingvolatileorganiccompounds