期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 963, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2023.171190
关键词
Gas sensors; Nanostructures; Heterojunction
Detection of ethanol is crucial in various fields due to its explosive, colorless and volatile nature. Metal oxide semiconductors (MOS) gas sensors, particularly those based on indium oxide (In2O3), have gained attention for their low cost and convenient detection. This paper summarizes the strategies used in the last decade to enhance the performance of In2O3-based gas sensors for ethanol detection, including morphology modification, doping, heterojunction construction, and the use of composite materials. The sensing mechanism for ethanol detection by gas sensors is also presented.
Due to its explosive, colorless and volatile nature, detection of ethanol is critical in daily life, industrial production and medical treatment. Metal oxide semiconductors (MOS) gas sensors have caught the attention of researchers due to their low cost and convenient detection. Indium oxide (In2O3) is a typical wide band gap ntype semiconductor metal oxide widely used in detecting H2S, NO2, H2, and ethanol. This paper summarizes the strategies used in the last decade to improve the performance of gas sensors based on In2O3 sensitive materials for ethanol detection. These strategies include modifying the morphology of indium oxide sensitive materials, doping and loading, building heterojunctions, and using composite new materials. In addition, the sensing mechanism for ethanol detection by gas sensors is presented.
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