Ti2CTx MXene: A novel p-type sensing material for visible light-enhanced room temperature methane detection

Jing Wang; Ruiqi Xu; Yi Xia; Sridhar Komarneni

doi:10.1016/j.ceramint.2021.08.357

Ti₂CT_x MXene: A novel p-type sensing material for visible light-enhanced room temperature methane detection

Jing Wang
, Ruiqi Xu
, Yi Xia
, Sridhar Komarneni

Research output: Contribution to journal › Article › peer-review

63 Scopus citations

Abstract

The development of semiconductor-based room-temperature methane (CH₄) gas sensors is appealing but challenging. Herein, we report a CH₄ gas sensor operating at room temperature based on Ti₂CT_x MXene, a novel p-type sensing material, achieving high-performance CH₄ detection with visible light assistance. The Ti₂CT_x MXene based device showed more than seven-fold improvement for CH₄ detection under visible-light irradiation, and the response/recovery times were also sharply decreased. The excellent CH₄ sensing performance at room temperature could be attributed to the visible-light photocatalytic CH₄ oxidation activity of the Ti₂CT_x sensing material. CH₄ oxidation was revealed by photocatalytic measurement, O₂-TPD and in-situ IR spectroscopies. The present work demonstrates the novel application of Ti₂CT_x MXene as a promising p-type sensing material for methane detection at room temperature. Moreover, the concept of “photocatalysis-enhanced gas sensing” can be employed in room-temperature gas sensors based on other novel semiconductors.

Original language	English (US)
Journal	Ceramics International
DOIs	https://doi.org/10.1016/j.ceramint.2021.08.357
State	Accepted/In press - 2021

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2021.08.357

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title = "Ti2CTx MXene: A novel p-type sensing material for visible light-enhanced room temperature methane detection",

abstract = "The development of semiconductor-based room-temperature methane (CH4) gas sensors is appealing but challenging. Herein, we report a CH4 gas sensor operating at room temperature based on Ti2CTx MXene, a novel p-type sensing material, achieving high-performance CH4 detection with visible light assistance. The Ti2CTx MXene based device showed more than seven-fold improvement for CH4 detection under visible-light irradiation, and the response/recovery times were also sharply decreased. The excellent CH4 sensing performance at room temperature could be attributed to the visible-light photocatalytic CH4 oxidation activity of the Ti2CTx sensing material. CH4 oxidation was revealed by photocatalytic measurement, O2-TPD and in-situ IR spectroscopies. The present work demonstrates the novel application of Ti2CTx MXene as a promising p-type sensing material for methane detection at room temperature. Moreover, the concept of {\textquotedblleft}photocatalysis-enhanced gas sensing{\textquotedblright} can be employed in room-temperature gas sensors based on other novel semiconductors.",

author = "Jing Wang and Ruiqi Xu and Yi Xia and Sridhar Komarneni",

note = "Funding Information: This work was supported by National Natural Science Foundation of China (Nos. 51802123 , 62101225 ) and the Natural Science Foundation of Jiangsu Province (No. BK20180630 ). Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd and Techna Group S.r.l.",

year = "2021",

doi = "10.1016/j.ceramint.2021.08.357",

language = "English (US)",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd",

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T2 - A novel p-type sensing material for visible light-enhanced room temperature methane detection

AU - Wang, Jing

AU - Xu, Ruiqi

AU - Xia, Yi

AU - Komarneni, Sridhar

N1 - Funding Information: This work was supported by National Natural Science Foundation of China (Nos. 51802123 , 62101225 ) and the Natural Science Foundation of Jiangsu Province (No. BK20180630 ). Publisher Copyright: © 2021 Elsevier Ltd and Techna Group S.r.l.

PY - 2021

Y1 - 2021

N2 - The development of semiconductor-based room-temperature methane (CH4) gas sensors is appealing but challenging. Herein, we report a CH4 gas sensor operating at room temperature based on Ti2CTx MXene, a novel p-type sensing material, achieving high-performance CH4 detection with visible light assistance. The Ti2CTx MXene based device showed more than seven-fold improvement for CH4 detection under visible-light irradiation, and the response/recovery times were also sharply decreased. The excellent CH4 sensing performance at room temperature could be attributed to the visible-light photocatalytic CH4 oxidation activity of the Ti2CTx sensing material. CH4 oxidation was revealed by photocatalytic measurement, O2-TPD and in-situ IR spectroscopies. The present work demonstrates the novel application of Ti2CTx MXene as a promising p-type sensing material for methane detection at room temperature. Moreover, the concept of “photocatalysis-enhanced gas sensing” can be employed in room-temperature gas sensors based on other novel semiconductors.

AB - The development of semiconductor-based room-temperature methane (CH4) gas sensors is appealing but challenging. Herein, we report a CH4 gas sensor operating at room temperature based on Ti2CTx MXene, a novel p-type sensing material, achieving high-performance CH4 detection with visible light assistance. The Ti2CTx MXene based device showed more than seven-fold improvement for CH4 detection under visible-light irradiation, and the response/recovery times were also sharply decreased. The excellent CH4 sensing performance at room temperature could be attributed to the visible-light photocatalytic CH4 oxidation activity of the Ti2CTx sensing material. CH4 oxidation was revealed by photocatalytic measurement, O2-TPD and in-situ IR spectroscopies. The present work demonstrates the novel application of Ti2CTx MXene as a promising p-type sensing material for methane detection at room temperature. Moreover, the concept of “photocatalysis-enhanced gas sensing” can be employed in room-temperature gas sensors based on other novel semiconductors.

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DO - 10.1016/j.ceramint.2021.08.357

M3 - Article

AN - SCOPUS:85114239196

SN - 0272-8842

JO - Ceramics International

JF - Ceramics International

ER -

Ti₂CT_x MXene: A novel p-type sensing material for visible light-enhanced room temperature methane detection

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