Highly Selective Gas Sensor Based on Litchi-like g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> for Rapid Detection of H<sub>2</sub>

Hydrogen (H<sub>2</sub>) has gradually become a substitute for traditional energy, but its potential danger cannot be ignored. In this study, litchi-like g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> composites were synthesized b...

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Published in:Sensors
Main Authors: Ji Zhang, Xu Li, Qinhe Pan, Tong Liu, Qingji Wang
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Subjects:
g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub>
litchi-like
H<sub>2</sub> sensor
fast response
high selectivity
Online Access:https://www.mdpi.com/1424-8220/23/1/148
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author Ji Zhang
Xu Li
Qinhe Pan
Tong Liu
Qingji Wang
author_facet Ji Zhang
Xu Li
Qinhe Pan
Tong Liu
Qingji Wang
author_sort Ji Zhang
collection DOAJ
container_title Sensors
description Hydrogen (H<sub>2</sub>) has gradually become a substitute for traditional energy, but its potential danger cannot be ignored. In this study, litchi-like g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> composites were synthesized by a hydrothermal method and used to develop H<sub>2</sub> sensors. The morphology characteristics and chemical composition of the samples were characterized to analyze the gas-sensing properties. Meanwhile, a series of sensors were tested to evaluate the gas-sensing performance. Among these sensors, the sensor based on the 3 wt% g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> (the mass ratio of g-C<sub>3</sub>N<sub>4</sub> to In<sub>2</sub>O<sub>3</sub> is 3:100) showeds good response properties to H<sub>2</sub>, exhibiting fast response/recovery time and excellent selectivity to H<sub>2</sub>. The improvement in the gas-sensing performance may be related to the special morphology, the oxygen state and the g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> heterojunction. To sum up, a sensor based on 3 wt% g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> exhibits preeminent performance for H<sub>2</sub> with high sensitivity, fast response, and excellent selectivity.
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spelling doaj-art-efca5a7b48b44d0dbc8c018bd03e69cb2025-08-19T22:33:06ZengMDPI AGSensors1424-82202022-12-0123114810.3390/s23010148Highly Selective Gas Sensor Based on Litchi-like g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> for Rapid Detection of H<sub>2</sub>Ji Zhang0Xu Li1Qinhe Pan2Tong Liu3Qingji Wang4State Key Laboratory of Marine Resource Utilization in South China Sea, College of Information and Communication Engineering, Hainan University, Haikou 570228, ChinaSchool of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Chemical Engineering and Technology, Hainan University, Haikou 570228, ChinaSchool of Electronic and Information Engineering, Qingdao University, 308 Ningxia Street, Qingdao 266071, ChinaState Key Laboratory of Marine Resource Utilization in South China Sea, College of Information and Communication Engineering, Hainan University, Haikou 570228, ChinaHydrogen (H<sub>2</sub>) has gradually become a substitute for traditional energy, but its potential danger cannot be ignored. In this study, litchi-like g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> composites were synthesized by a hydrothermal method and used to develop H<sub>2</sub> sensors. The morphology characteristics and chemical composition of the samples were characterized to analyze the gas-sensing properties. Meanwhile, a series of sensors were tested to evaluate the gas-sensing performance. Among these sensors, the sensor based on the 3 wt% g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> (the mass ratio of g-C<sub>3</sub>N<sub>4</sub> to In<sub>2</sub>O<sub>3</sub> is 3:100) showeds good response properties to H<sub>2</sub>, exhibiting fast response/recovery time and excellent selectivity to H<sub>2</sub>. The improvement in the gas-sensing performance may be related to the special morphology, the oxygen state and the g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> heterojunction. To sum up, a sensor based on 3 wt% g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> exhibits preeminent performance for H<sub>2</sub> with high sensitivity, fast response, and excellent selectivity.https://www.mdpi.com/1424-8220/23/1/148g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub>litchi-likeH<sub>2</sub> sensorfast responsehigh selectivity
spellingShingle Ji Zhang
Xu Li
Qinhe Pan
Tong Liu
Qingji Wang
Highly Selective Gas Sensor Based on Litchi-like g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> for Rapid Detection of H<sub>2</sub>
g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub>
litchi-like
H<sub>2</sub> sensor
fast response
high selectivity
title Highly Selective Gas Sensor Based on Litchi-like g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> for Rapid Detection of H<sub>2</sub>
title_full Highly Selective Gas Sensor Based on Litchi-like g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> for Rapid Detection of H<sub>2</sub>
title_fullStr Highly Selective Gas Sensor Based on Litchi-like g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> for Rapid Detection of H<sub>2</sub>
title_full_unstemmed Highly Selective Gas Sensor Based on Litchi-like g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> for Rapid Detection of H<sub>2</sub>
title_short Highly Selective Gas Sensor Based on Litchi-like g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub> for Rapid Detection of H<sub>2</sub>
title_sort highly selective gas sensor based on litchi like g c sub 3 sub n sub 4 sub in sub 2 sub o sub 3 sub for rapid detection of h sub 2 sub
topic g-C<sub>3</sub>N<sub>4</sub>/In<sub>2</sub>O<sub>3</sub>
litchi-like
H<sub>2</sub> sensor
fast response
high selectivity
url https://www.mdpi.com/1424-8220/23/1/148
work_keys_str_mv AT jizhang highlyselectivegassensorbasedonlitchilikegcsub3subnsub4subinsub2subosub3subforrapiddetectionofhsub2sub
AT xuli highlyselectivegassensorbasedonlitchilikegcsub3subnsub4subinsub2subosub3subforrapiddetectionofhsub2sub
AT qinhepan highlyselectivegassensorbasedonlitchilikegcsub3subnsub4subinsub2subosub3subforrapiddetectionofhsub2sub
AT tongliu highlyselectivegassensorbasedonlitchilikegcsub3subnsub4subinsub2subosub3subforrapiddetectionofhsub2sub
AT qingjiwang highlyselectivegassensorbasedonlitchilikegcsub3subnsub4subinsub2subosub3subforrapiddetectionofhsub2sub

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