{"title":"通过氧空位调制优化氧化钼气敏性能：综述。","authors":"Jiaying Jia, Aiwu Wang, Xingying Li, Weiyong Liu, Zhiling Huang, Zhenyao Wu, Muhammad Humayun, Mohamed Bououdina","doi":"10.1002/tcr.202500041","DOIUrl":null,"url":null,"abstract":"<p><p>Molybdenum oxide (MoO<sub>3</sub>) is a promising material for gas sensing due to its unique physicochemical properties, including multiple chemical valence states, high thermal stability, and suitable bandgap. Oxygen vacancies, as critical structural defects, significantly enhance the gas sensing performance of MoO<sub>3</sub> by modifying its electronic structure and surface chemistry. This review discusses the formation mechanism of oxygen vacancies and their role in improving sensing performance, such as introducing energy levels within the bandgap, altering surface atomic configurations, and promoting gas adsorption and reactions. Experimental and theoretical studies demonstrate that oxygen vacancies enhance sensitivity and selectivity for gases like NH<sub>3</sub>, NO<sub>2</sub>, H<sub>2</sub>S, TEA, and ethanol. Strategies to optimize oxygen vacancy (OV) concentration, including doping with metal/rare earth elements and microstructure design, are also explored. Future research directions include in-depth studies on OV formation mechanisms, performance under complex conditions, and advanced sensor development, supported by theoretical calculations to better understand their effects on MoO<sub>3</sub>'s electronic and adsorption properties.</p>","PeriodicalId":10046,"journal":{"name":"Chemical record","volume":" ","pages":"e202500041"},"PeriodicalIF":7.5000,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Optimizing Gas Sensing Performance of Molybdenum Oxide through Oxygen Vacancy Modulation: A Critical Review.\",\"authors\":\"Jiaying Jia, Aiwu Wang, Xingying Li, Weiyong Liu, Zhiling Huang, Zhenyao Wu, Muhammad Humayun, Mohamed Bououdina\",\"doi\":\"10.1002/tcr.202500041\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Molybdenum oxide (MoO<sub>3</sub>) is a promising material for gas sensing due to its unique physicochemical properties, including multiple chemical valence states, high thermal stability, and suitable bandgap. Oxygen vacancies, as critical structural defects, significantly enhance the gas sensing performance of MoO<sub>3</sub> by modifying its electronic structure and surface chemistry. This review discusses the formation mechanism of oxygen vacancies and their role in improving sensing performance, such as introducing energy levels within the bandgap, altering surface atomic configurations, and promoting gas adsorption and reactions. Experimental and theoretical studies demonstrate that oxygen vacancies enhance sensitivity and selectivity for gases like NH<sub>3</sub>, NO<sub>2</sub>, H<sub>2</sub>S, TEA, and ethanol. Strategies to optimize oxygen vacancy (OV) concentration, including doping with metal/rare earth elements and microstructure design, are also explored. Future research directions include in-depth studies on OV formation mechanisms, performance under complex conditions, and advanced sensor development, supported by theoretical calculations to better understand their effects on MoO<sub>3</sub>'s electronic and adsorption properties.</p>\",\"PeriodicalId\":10046,\"journal\":{\"name\":\"Chemical record\",\"volume\":\" \",\"pages\":\"e202500041\"},\"PeriodicalIF\":7.5000,\"publicationDate\":\"2025-10-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical record\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1002/tcr.202500041\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical record","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1002/tcr.202500041","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Optimizing Gas Sensing Performance of Molybdenum Oxide through Oxygen Vacancy Modulation: A Critical Review.
Molybdenum oxide (MoO3) is a promising material for gas sensing due to its unique physicochemical properties, including multiple chemical valence states, high thermal stability, and suitable bandgap. Oxygen vacancies, as critical structural defects, significantly enhance the gas sensing performance of MoO3 by modifying its electronic structure and surface chemistry. This review discusses the formation mechanism of oxygen vacancies and their role in improving sensing performance, such as introducing energy levels within the bandgap, altering surface atomic configurations, and promoting gas adsorption and reactions. Experimental and theoretical studies demonstrate that oxygen vacancies enhance sensitivity and selectivity for gases like NH3, NO2, H2S, TEA, and ethanol. Strategies to optimize oxygen vacancy (OV) concentration, including doping with metal/rare earth elements and microstructure design, are also explored. Future research directions include in-depth studies on OV formation mechanisms, performance under complex conditions, and advanced sensor development, supported by theoretical calculations to better understand their effects on MoO3's electronic and adsorption properties.
期刊介绍：
The Chemical Record (TCR) is a "highlights" journal publishing timely and critical overviews of new developments at the cutting edge of chemistry of interest to a wide audience of chemists (2013 journal impact factor: 5.577). The scope of published reviews includes all areas related to physical chemistry, analytical chemistry, inorganic chemistry, organic chemistry, polymer chemistry, materials chemistry, bioorganic chemistry, biochemistry, biotechnology and medicinal chemistry as well as interdisciplinary fields.
TCR provides carefully selected highlight papers by leading researchers that introduce the author''s own experimental and theoretical results in a framework designed to establish perspectives with earlier and contemporary work and provide a critical review of the present state of the subject. The articles are intended to present concise evaluations of current trends in chemistry research to help chemists gain useful insights into fields outside their specialization and provide experts with summaries of recent key developments.
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