AUTHOR=Yang Shulin , Yin Huan , Wang Zhao , Lei Gui , Xu Huoxi , Lan Zhigao , Gu Haoshuang 

TITLE=Gas sensing performance of In2O3 nanostructures: A mini review

JOURNAL=Frontiers in Chemistry

VOLUME=11

YEAR=2023

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2023.1174207

DOI=10.3389/fchem.2023.1174207

ISSN=2296-2646

ABSTRACT=<p>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. In<sub>2</sub>O<sub>3</sub> is a widely used n-type metal oxide in gas sensors, and various In<sub>2</sub>O<sub>3</sub> nanostructures have been synthesized for detecting small gas molecules. In this review, we provide a brief summary of current research on In<sub>2</sub>O<sub>3</sub>-based gas sensors. We discuss methods for synthesizing In<sub>2</sub>O<sub>3</sub> 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 In<sub>2</sub>O<sub>3</sub> nanostructures is discussed. Our review further indicates that In<sub>2</sub>O<sub>3</sub>-based nanomaterials hold great promise for assembling high-performance gas sensors.</p>