Mxene Ti3C2Tx derived lamellar Ti3C2Tx-TiO2-CuO heterojunction: Significantly improved ammonia sensor performance

Ming Hou; Guoxin Jiang; Shenghui Guo; Jiyun Gao; Zhigang Shen; Zhihang Wang; Xiaolei Ye; Li Yang; Qian Du; Jianhong Yi; Hongbo Zeng; Pascal Briois

Arabian Journal of Chemistry (Jul 2023)

Mxene Ti3C2Tx derived lamellar Ti3C2Tx-TiO2-CuO heterojunction: Significantly improved ammonia sensor performance

Ming Hou,
Guoxin Jiang,
Shenghui Guo,
Jiyun Gao,
Zhigang Shen,
Zhihang Wang,
Xiaolei Ye,
Li Yang,
Qian Du,
Jianhong Yi,
Hongbo Zeng,
Pascal Briois

Affiliations

Ming Hou: State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
Guoxin Jiang: State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
Shenghui Guo: State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
Jiyun Gao: State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
Zhigang Shen: SINOPEC Shanghai Research Institute of Petrochemical Technology, Shanghai 201208, China
Zhihang Wang: Sinochem International Corporation, Beijing 100045, China
Xiaolei Ye: FEMTO-ST Institute (UMR CNRS 6174), UBFC/UTBM. Site de Montbéliard, F-90010 Belfort, France; Corresponding authors.
Li Yang: State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China; Department of Chemical and Materials Engineering, University of Alberta, Edmonton T6G 2V4, Canada; Corresponding authors.
Qian Du: State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
Jianhong Yi: Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
Hongbo Zeng: Department of Chemical and Materials Engineering, University of Alberta, Edmonton T6G 2V4, Canada
Pascal Briois: FEMTO-ST Institute (UMR CNRS 6174), UBFC/UTBM. Site de Montbéliard, F-90010 Belfort, France

Journal volume & issue: Vol. 16, no. 7
p. 104808

Abstract

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Ammonia (NH3), as main industrial gas emissions, are extremely harmful to the human beings. So the detection of NH3 concentrations in special environments at room temperature (25 °C) is essential. Herein, the composite MXene Ti3C2Tx-TiO2-CuO was successfully prepared by one-step in-situ oxidation method using Cu(NO3)2·6H2O as a precursor. The morphology of Ti3C2Tx-TiO2-CuO shows layered accordion-like structure. Ti3C2Tx-TiO2-CuO sensor exhibits improved NH3 gas sensing response of 56.9 toward 100 ppm NH3 at room temperature under ultraviolet (UV) light exposure, which is 89.8 % higher than that of pristine Ti3C2Tx material. The improved gas sensing performance is attributed to the irradiation of UV light, the retention of Ti3C2Tx layered structure and the construction of TiO2-CuO heterojunction. Further, the possible gas sensing mechanism of the material was proposed and discussed.

Published in Arabian Journal of Chemistry

ISSN: 1878-5352 (Print)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry
Website: http://www.journals.elsevier.com/arabian-journal-of-chemistry/

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