Issue 17, 2023
From the journal:

New Journal of Chemistry

A bimetallic MOF-derived α-Fe2O3/In2O3 heterojunction for a cyclohexane gas sensor†

Dan Xie,a   Feng Zhang, ORCID logo *ab   Kai Yu,a   Xiaofeng Li*a  and  Fengyu Qu*ab  

* Corresponding authors

a Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, Heilongjiang Province and School of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025, P. R. China

b Key Laboratory of Photonic and Electronic Bandgap Materials, Ministry of Education, Harbin Normal University, Harbin 150025, P. R. China
E-mail: zhangfeng@hrbnu.edu.cn, qufengyu@hrbnu.edu.cn, Lixiaofeng@hrbnu.edu.cn

Abstract

Recently, metal–organic framework (MOF)-derived semiconductors have been tremendously stimulated for application in gas sensors due to their advantages in terms of unique structures and tailored composition. In this work, a bimetal–organic framework of InFc MOF synthesized via a hydrothermal strategy is rendered as a template to convert α-Fe2O3/In2O3 heterojunctions by annealing treatment. When investigated as a gas sensing material, the optimal α-Fe2O3/In2O3 composite (calcined at 600 °C, In–Fe-6) achieves a high sensitivity (86) to 100 ppm cyclohexane at a working temperature of 225 °C, in the top set for similar types of sensors. Besides, α-Fe2O3/In2O3 exhibits high selectivity, rapid response (15 s) and excellent repeatability in sensing cyclohexane. The enhanced performance for cyclohexane sensing is also discussed in detail.

Graphical abstract: A bimetallic MOF-derived α-Fe2O3/In2O3 heterojunction for a cyclohexane gas sensor

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Article information

DOI
https://doi.org/10.1039/D3NJ00442B
Article type
Paper
Submitted
30 Jan 2023
Accepted
23 Mar 2023
First published
23 Mar 2023

New J. Chem., 2023,47, 7995-8001

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A bimetallic MOF-derived α-Fe2O3/In2O3 heterojunction for a cyclohexane gas sensor

D. Xie, F. Zhang, K. Yu, X. Li and F. Qu, New J. Chem., 2023, 47, 7995 DOI: 10.1039/D3NJ00442B

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