Enhanced Room-Temperature NH3-Sensing Performance of Ti3C2Tx MXene Decorated with CeO2 Nanoparticles

Lizhai Zhang; Jiayuan Xu; Dingyuan Wang; Xinyu Lei; Henghui Sun; Yuhong Huang; Fei Ma; Taotao Ai; Paul K. Chu

doi:10.1021/acsanm.5c01721

Enhanced Room-Temperature NH₃-Sensing Performance of Ti₃C₂T_x MXene Decorated with CeO₂ Nanoparticles

Lizhai Zhang
, Jiayuan Xu
, Dingyuan Wang
, Xinyu Lei
, Henghui Sun
, Yuhong Huang
, Fei Ma
, Taotao Ai
, Paul K. Chu

School of Materials Science and Engineering

Shaanxi University of Technology
Xi'an Jiaotong University
City University of Hong Kong
Shaanxi Normal University

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

8 Scopus citations

Abstract

2D MXenes have garnered enormous interest in the field of gas sensing. Unfortunately, the low stability, long recovery time, poor selectivity, and vulnerability to oxidation have hampered further development. Herein, Ti₃C₂T_x MXene is incorporated with CeO₂ nanoparticles to improve the detection of NH₃. Compared with Ti₃C₂T_x and CeO₂, the response of composite to 10 ppm of NH₃ is enhanced by 180% and 714% at room temperature, respectively, in addition to the excellent selectivity, fast response, and recovery rate. Based on the first-principles calculation, the CeO₂ nanoparticles form a multifunctional passivation layer to shield the MXene from oxidative degradation and also provide ample active sites to adsorb NH₃ gas to enhance the sensing ability. The results reveal an effective means of designing and developing high-performance room-temperature ammonia sensors.

Original language	English
Pages (from-to)	12090-12099
Number of pages	10
Journal	ACS Applied Nano Materials
Volume	8
Issue number	23
DOIs	https://doi.org/10.1021/acsanm.5c01721
State	Published - 13 Jun 2025

Keywords

CeO
TiCT
first-principles calculation
heterojunction
room-temperature gas sensor

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10.1021/acsanm.5c01721

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title = "Enhanced Room-Temperature NH3-Sensing Performance of Ti3C2Tx MXene Decorated with CeO2 Nanoparticles",

abstract = "2D MXenes have garnered enormous interest in the field of gas sensing. Unfortunately, the low stability, long recovery time, poor selectivity, and vulnerability to oxidation have hampered further development. Herein, Ti3C2Tx MXene is incorporated with CeO2 nanoparticles to improve the detection of NH3. Compared with Ti3C2Tx and CeO2, the response of composite to 10 ppm of NH3 is enhanced by 180\% and 714\% at room temperature, respectively, in addition to the excellent selectivity, fast response, and recovery rate. Based on the first-principles calculation, the CeO2 nanoparticles form a multifunctional passivation layer to shield the MXene from oxidative degradation and also provide ample active sites to adsorb NH3 gas to enhance the sensing ability. The results reveal an effective means of designing and developing high-performance room-temperature ammonia sensors.",

keywords = "CeO, TiCT, first-principles calculation, heterojunction, room-temperature gas sensor",

author = "Lizhai Zhang and Jiayuan Xu and Dingyuan Wang and Xinyu Lei and Henghui Sun and Yuhong Huang and Fei Ma and Taotao Ai and Chu, \{Paul K.\}",

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year = "2025",

month = jun,

day = "13",

doi = "10.1021/acsanm.5c01721",

language = "英语",

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journal = "ACS Applied Nano Materials",

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T1 - Enhanced Room-Temperature NH3-Sensing Performance of Ti3C2Tx MXene Decorated with CeO2 Nanoparticles

AU - Zhang, Lizhai

AU - Xu, Jiayuan

AU - Wang, Dingyuan

AU - Lei, Xinyu

AU - Sun, Henghui

AU - Huang, Yuhong

AU - Ma, Fei

AU - Ai, Taotao

AU - Chu, Paul K.

PY - 2025/6/13

Y1 - 2025/6/13

N2 - 2D MXenes have garnered enormous interest in the field of gas sensing. Unfortunately, the low stability, long recovery time, poor selectivity, and vulnerability to oxidation have hampered further development. Herein, Ti3C2Tx MXene is incorporated with CeO2 nanoparticles to improve the detection of NH3. Compared with Ti3C2Tx and CeO2, the response of composite to 10 ppm of NH3 is enhanced by 180% and 714% at room temperature, respectively, in addition to the excellent selectivity, fast response, and recovery rate. Based on the first-principles calculation, the CeO2 nanoparticles form a multifunctional passivation layer to shield the MXene from oxidative degradation and also provide ample active sites to adsorb NH3 gas to enhance the sensing ability. The results reveal an effective means of designing and developing high-performance room-temperature ammonia sensors.

AB - 2D MXenes have garnered enormous interest in the field of gas sensing. Unfortunately, the low stability, long recovery time, poor selectivity, and vulnerability to oxidation have hampered further development. Herein, Ti3C2Tx MXene is incorporated with CeO2 nanoparticles to improve the detection of NH3. Compared with Ti3C2Tx and CeO2, the response of composite to 10 ppm of NH3 is enhanced by 180% and 714% at room temperature, respectively, in addition to the excellent selectivity, fast response, and recovery rate. Based on the first-principles calculation, the CeO2 nanoparticles form a multifunctional passivation layer to shield the MXene from oxidative degradation and also provide ample active sites to adsorb NH3 gas to enhance the sensing ability. The results reveal an effective means of designing and developing high-performance room-temperature ammonia sensors.

KW - CeO

KW - TiCT

KW - first-principles calculation

KW - heterojunction

KW - room-temperature gas sensor

UR - https://www.scopus.com/pages/publications/105007498881

U2 - 10.1021/acsanm.5c01721

DO - 10.1021/acsanm.5c01721

M3 - 文章

AN - SCOPUS:105007498881

SN - 2574-0970

VL - 8

SP - 12090

EP - 12099

JO - ACS Applied Nano Materials

JF - ACS Applied Nano Materials

IS - 23

ER -

Enhanced Room-Temperature NH₃-Sensing Performance of Ti₃C₂T_x MXene Decorated with CeO₂ Nanoparticles

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Keywords

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