High Sensitivity Bi<sub>2</sub>O<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> Ammonia Sensor Based on Improved Synthetic MXene Method at Room Temperature

The MXene Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> was synthesized using hydrofluoric acid and an improved multilayer method in this study. Subsequently, a Bi<sub>2</sub>O<sub>3</sub>/Ti<sub>3</sub>C2T<sub>x</sub> co...

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Published in:Sensors
Main Authors: Baocang Zhou, Zhihua Zhao, Zhenli Lv, Zhuo Chen, Sibo Kang
Format: Article
Language:English
Published: MDPI AG 2024-10-01
Subjects:
ammonia sensor
Bi<sub>2</sub>O<sub>3</sub>
Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>
MXene
gas sensors
Online Access:https://www.mdpi.com/1424-8220/24/20/6514
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author Baocang Zhou
Zhihua Zhao
Zhenli Lv
Zhuo Chen
Sibo Kang
author_facet Baocang Zhou
Zhihua Zhao
Zhenli Lv
Zhuo Chen
Sibo Kang
author_sort Baocang Zhou
collection DOAJ
container_title Sensors
description The MXene Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> was synthesized using hydrofluoric acid and an improved multilayer method in this study. Subsequently, a Bi<sub>2</sub>O<sub>3</sub>/Ti<sub>3</sub>C2T<sub>x</sub> composite material was produced through hydrothermal synthesis. This composite boasts a unique layered structure, offering a large surface area that provides numerous contact and reaction sites, facilitating the adsorption of ammonia on its surface. The prepared Bi<sub>2</sub>O<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>-based sensor exhibits excellent sensing performance for ammonia gas, including high responsiveness, good repeatability, and rapid response–recovery time. The sensor’s response to 100 ppm ammonia gas is 61%, which is 11.3 times and 1.6 times the response values of the Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> gas sensor and Bi<sub>2</sub>O<sub>3</sub> gas sensor, with response/recovery times of 61 s/164 s at room temperature, respectively. Additionally, the gas sensitivity mechanism of the Bi<sub>2</sub>O<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>-based sensor was analyzed, and the gas sensing response mechanism was proposed. This study shows that the sensor can effectively enhance the accuracy and precision of ammonia detection at room temperature and has a wide range of application scenarios.
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spelling doaj-art-e53690cf987440398231127fd4b4e3202025-08-19T23:11:44ZengMDPI AGSensors1424-82202024-10-012420651410.3390/s24206514High Sensitivity Bi<sub>2</sub>O<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> Ammonia Sensor Based on Improved Synthetic MXene Method at Room TemperatureBaocang Zhou0Zhihua Zhao1Zhenli Lv2Zhuo Chen3Sibo Kang4College of Mechanical and Electrical Engineering, Henan University of Technology, Zhengzhou 450052, ChinaCollege of Mechanical and Electrical Engineering, Henan University of Technology, Zhengzhou 450052, ChinaCollege of Mechanical and Electrical Engineering, Henan University of Technology, Zhengzhou 450052, ChinaCollege of Mechanical and Electrical Engineering, Henan University of Technology, Zhengzhou 450052, ChinaCollege of Mechanical and Electrical Engineering, Henan University of Technology, Zhengzhou 450052, ChinaThe MXene Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> was synthesized using hydrofluoric acid and an improved multilayer method in this study. Subsequently, a Bi<sub>2</sub>O<sub>3</sub>/Ti<sub>3</sub>C2T<sub>x</sub> composite material was produced through hydrothermal synthesis. This composite boasts a unique layered structure, offering a large surface area that provides numerous contact and reaction sites, facilitating the adsorption of ammonia on its surface. The prepared Bi<sub>2</sub>O<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>-based sensor exhibits excellent sensing performance for ammonia gas, including high responsiveness, good repeatability, and rapid response–recovery time. The sensor’s response to 100 ppm ammonia gas is 61%, which is 11.3 times and 1.6 times the response values of the Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> gas sensor and Bi<sub>2</sub>O<sub>3</sub> gas sensor, with response/recovery times of 61 s/164 s at room temperature, respectively. Additionally, the gas sensitivity mechanism of the Bi<sub>2</sub>O<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>-based sensor was analyzed, and the gas sensing response mechanism was proposed. This study shows that the sensor can effectively enhance the accuracy and precision of ammonia detection at room temperature and has a wide range of application scenarios.https://www.mdpi.com/1424-8220/24/20/6514ammonia sensorBi<sub>2</sub>O<sub>3</sub>Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>MXenegas sensors
spellingShingle Baocang Zhou
Zhihua Zhao
Zhenli Lv
Zhuo Chen
Sibo Kang
High Sensitivity Bi<sub>2</sub>O<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> Ammonia Sensor Based on Improved Synthetic MXene Method at Room Temperature
ammonia sensor
Bi<sub>2</sub>O<sub>3</sub>
Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>
MXene
gas sensors
title High Sensitivity Bi<sub>2</sub>O<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> Ammonia Sensor Based on Improved Synthetic MXene Method at Room Temperature
title_full High Sensitivity Bi<sub>2</sub>O<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> Ammonia Sensor Based on Improved Synthetic MXene Method at Room Temperature
title_fullStr High Sensitivity Bi<sub>2</sub>O<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> Ammonia Sensor Based on Improved Synthetic MXene Method at Room Temperature
title_full_unstemmed High Sensitivity Bi<sub>2</sub>O<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> Ammonia Sensor Based on Improved Synthetic MXene Method at Room Temperature
title_short High Sensitivity Bi<sub>2</sub>O<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> Ammonia Sensor Based on Improved Synthetic MXene Method at Room Temperature
title_sort high sensitivity bi sub 2 sub o sub 3 sub ti sub 3 sub c sub 2 sub t sub x sub ammonia sensor based on improved synthetic mxene method at room temperature
topic ammonia sensor
Bi<sub>2</sub>O<sub>3</sub>
Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>
MXene
gas sensors
url https://www.mdpi.com/1424-8220/24/20/6514
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AT zhihuazhao highsensitivitybisub2subosub3subtisub3subcsub2subtsubxsubammoniasensorbasedonimprovedsyntheticmxenemethodatroomtemperature
AT zhenlilv highsensitivitybisub2subosub3subtisub3subcsub2subtsubxsubammoniasensorbasedonimprovedsyntheticmxenemethodatroomtemperature
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AT sibokang highsensitivitybisub2subosub3subtisub3subcsub2subtsubxsubammoniasensorbasedonimprovedsyntheticmxenemethodatroomtemperature

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