A Highly Sensitive and Room Temperature CNTs/SnO2/CuO Sensor for H2S Gas Sensing Applications

A Highly Sensitive and Room Temperature CNTs/SnO2/CuO Sensor for H2S Gas Sensing Applications

Abstract Gas sensors based on tin dioxide-carbon nanotube composite films were fabricated by a simple inexpensive sol-gel spin-coating method using PEG400 as a solvent. Nanostructured copper was coated on CNTs/SnO2 film, and then copper was transformed into copper oxide at 250 °C. Resistivity of the...

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Main Authors: Yang Zhao, Jijun Zhang, Yan Wang, Zexiang Chen
Format: Article
Language:English
Published: SpringerOpen 2020-02-01
Series:Nanoscale Research Letters
Subjects:
H2S detection
Room temperature sensor
SnO2 nanocomposite
Gas sensor
Online Access:https://doi.org/10.1186/s11671-020-3265-7
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spelling doaj-6830f577ce0f429088401c54e53ec2272021-02-14T12:15:02ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2020-02-011511810.1186/s11671-020-3265-7A Highly Sensitive and Room Temperature CNTs/SnO2/CuO Sensor for H2S Gas Sensing ApplicationsYang Zhao0Jijun Zhang1Yan Wang2Zexiang Chen3School of Optoelectronic Science And Engineering, University of Electronic Science and Technology of ChinaSchool of Optoelectronic Science And Engineering, University of Electronic Science and Technology of ChinaSchool of Optoelectronic Science And Engineering, University of Electronic Science and Technology of ChinaSchool of Optoelectronic Science And Engineering, University of Electronic Science and Technology of ChinaAbstract Gas sensors based on tin dioxide-carbon nanotube composite films were fabricated by a simple inexpensive sol-gel spin-coating method using PEG400 as a solvent. Nanostructured copper was coated on CNTs/SnO2 film, and then copper was transformed into copper oxide at 250 °C. Resistivity of the final composite films is highly sensitive to the presence of H2S, which became easily attached or detached at room temperature. The response and recovery time of the sensor are 4 min and 10 min, and the value of sensitivity is 4.41, respectively. Meanwhile, the CNTs/SnO2/CuO sensor also has low detection limit, high selectivity toward H2S, and stable performance with different concentrations of H2S.https://doi.org/10.1186/s11671-020-3265-7H2S detectionRoom temperature sensorSnO2 nanocompositeGas sensor
collection DOAJ
language English
format Article
sources DOAJ
author Yang Zhao
Jijun Zhang
Yan Wang
Zexiang Chen
spellingShingle Yang Zhao
Jijun Zhang
Yan Wang
Zexiang Chen
A Highly Sensitive and Room Temperature CNTs/SnO2/CuO Sensor for H2S Gas Sensing Applications
Nanoscale Research Letters
H2S detection
Room temperature sensor
SnO2 nanocomposite
Gas sensor
author_facet Yang Zhao
Jijun Zhang
Yan Wang
Zexiang Chen
author_sort Yang Zhao
title A Highly Sensitive and Room Temperature CNTs/SnO2/CuO Sensor for H2S Gas Sensing Applications
title_short A Highly Sensitive and Room Temperature CNTs/SnO2/CuO Sensor for H2S Gas Sensing Applications
title_full A Highly Sensitive and Room Temperature CNTs/SnO2/CuO Sensor for H2S Gas Sensing Applications
title_fullStr A Highly Sensitive and Room Temperature CNTs/SnO2/CuO Sensor for H2S Gas Sensing Applications
title_full_unstemmed A Highly Sensitive and Room Temperature CNTs/SnO2/CuO Sensor for H2S Gas Sensing Applications
title_sort highly sensitive and room temperature cnts/sno2/cuo sensor for h2s gas sensing applications
publisher SpringerOpen
series Nanoscale Research Letters
issn 1931-7573
1556-276X
publishDate 2020-02-01
description Abstract Gas sensors based on tin dioxide-carbon nanotube composite films were fabricated by a simple inexpensive sol-gel spin-coating method using PEG400 as a solvent. Nanostructured copper was coated on CNTs/SnO2 film, and then copper was transformed into copper oxide at 250 °C. Resistivity of the final composite films is highly sensitive to the presence of H2S, which became easily attached or detached at room temperature. The response and recovery time of the sensor are 4 min and 10 min, and the value of sensitivity is 4.41, respectively. Meanwhile, the CNTs/SnO2/CuO sensor also has low detection limit, high selectivity toward H2S, and stable performance with different concentrations of H2S.
topic H2S detection
Room temperature sensor
SnO2 nanocomposite
Gas sensor
url https://doi.org/10.1186/s11671-020-3265-7
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