Gas sensing performance of In2O3 nanostructures: A mini review

Shulin Yang; Huan Yin; Zhao Wang; Gui Lei; Huoxi Xu; Zhigao Lan; Haoshuang Gu

doi:10.3389/fchem.2023.1174207

Gas sensing performance of In₂O₃ nanostructures: A mini review

Front Chem. 2023 Apr 7:11:1174207. doi: 10.3389/fchem.2023.1174207. eCollection 2023.

Authors

Shulin Yang^{1

2}, Huan Yin¹, Zhao Wang², Gui Lei¹, Huoxi Xu¹, Zhigao Lan¹, Haoshuang Gu²

Affiliations

¹ Hubei Key Laboratory for Processing and Application of Catalytic Materials, School of Physics and Electronic Information, Huanggang Normal University, Huanggang, China.
² Hubei Key Laboratory of Ferro and Piezoelectric Materials and Devices, Faculty of Physics and Electronic Sciences, Hubei University, Wuhan, China.

Abstract

Effective detection of toxic and hazardous gases is crucial for ensuring human safety, and high-performance metal oxide-based gas sensors play an important role in achieving this goal. In₂O₃ is a widely used n-type metal oxide in gas sensors, and various In₂O₃ nanostructures have been synthesized for detecting small gas molecules. In this review, we provide a brief summary of current research on In₂O₃-based gas sensors. We discuss methods for synthesizing In₂O₃ nanostructures with various morphologies, and mainly review the sensing behaviors of these structures in order to better understand their potential in gas sensors. Additionally, the sensing mechanism of In₂O₃ nanostructures is discussed. Our review further indicates that In₂O₃-based nanomaterials hold great promise for assembling high-performance gas sensors.

Keywords: In2O3; gas sensor; nanostructrues; review; sensing mechanism.

Publication types

Review

Grants and funding

This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 51802109, 51972102, 52072115, and U21A20500) and the Department of Science and Technology of Hubei Province (Grant No. 2022CFB525).