Recent Advances in Low-Dimensional Metal Oxides via Sol-Gel Method for Gas Detection
Low-dimensional metal oxides have drawn significant attention across various scientific domains due to their multifaceted applications, particularly in the field of environment monitoring. Their popularity is attributed to a constellation of unique properties, including their high surface area, robu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/14/4/359 |
| _version_ | 1797297344340819968 |
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| author | Marwa Ben Arbia Hicham Helal Elisabetta Comini |
| author_facet | Marwa Ben Arbia Hicham Helal Elisabetta Comini |
| author_sort | Marwa Ben Arbia |
| collection | DOAJ |
| description | Low-dimensional metal oxides have drawn significant attention across various scientific domains due to their multifaceted applications, particularly in the field of environment monitoring. Their popularity is attributed to a constellation of unique properties, including their high surface area, robust chemical stability, and remarkable electrical conductivity, among others, which allow them to be a good candidate for detecting CO, CO<sub>2</sub>, H<sub>2</sub>, NH<sub>3</sub>, NO<sub>2</sub>, CH<sub>4</sub>, H<sub>2</sub>S, and volatile organic compound gases. In recent years, the Sol-Gel method has emerged as a powerful and versatile technique for the controlled synthesis of low-dimensional metal oxide materials with diverse morphologies tailored for gas sensing applications. This review delves into the manifold facets of the Sol-Gel processing of metal oxides and reports their derived morphologies and remarkable gas-sensing properties. We comprehensively examine the synthesis conditions and critical parameters governing the formation of distinct morphologies, including nanoparticles, nanowires, nanorods, and hierarchical nanostructures. Furthermore, we provide insights into the fundamental principles underpinning the gas-sensing mechanisms of these materials. Notably, we assess the influence of morphology on gas-sensing performance, highlighting the pivotal role it plays in achieving exceptional sensitivity, selectivity, and response kinetics. Additionally, we highlight the impact of doping and composite formation on improving the sensitivity of pure metal oxides and reducing their operation temperature. A discussion of recent advances and emerging trends in the field is also presented, shedding light on the potential of Sol-Gel-derived nanostructures to revolutionize the landscape of gas sensing technologies. |
| first_indexed | 2024-03-07T22:19:14Z |
| format | Article |
| id | doaj.art-8e044f88f91e4a24ab5e43c4ed02287a |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-07T22:19:14Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-8e044f88f91e4a24ab5e43c4ed02287a2024-02-23T15:29:26ZengMDPI AGNanomaterials2079-49912024-02-0114435910.3390/nano14040359Recent Advances in Low-Dimensional Metal Oxides via Sol-Gel Method for Gas DetectionMarwa Ben Arbia0Hicham Helal1Elisabetta Comini2Sensor Lab, Department of Information Engineering, University of Brescia, Via Valotti 9, 25133 Brescia, ItalySensor Lab, Department of Information Engineering, University of Brescia, Via Valotti 9, 25133 Brescia, ItalySensor Lab, Department of Information Engineering, University of Brescia, Via Valotti 9, 25133 Brescia, ItalyLow-dimensional metal oxides have drawn significant attention across various scientific domains due to their multifaceted applications, particularly in the field of environment monitoring. Their popularity is attributed to a constellation of unique properties, including their high surface area, robust chemical stability, and remarkable electrical conductivity, among others, which allow them to be a good candidate for detecting CO, CO<sub>2</sub>, H<sub>2</sub>, NH<sub>3</sub>, NO<sub>2</sub>, CH<sub>4</sub>, H<sub>2</sub>S, and volatile organic compound gases. In recent years, the Sol-Gel method has emerged as a powerful and versatile technique for the controlled synthesis of low-dimensional metal oxide materials with diverse morphologies tailored for gas sensing applications. This review delves into the manifold facets of the Sol-Gel processing of metal oxides and reports their derived morphologies and remarkable gas-sensing properties. We comprehensively examine the synthesis conditions and critical parameters governing the formation of distinct morphologies, including nanoparticles, nanowires, nanorods, and hierarchical nanostructures. Furthermore, we provide insights into the fundamental principles underpinning the gas-sensing mechanisms of these materials. Notably, we assess the influence of morphology on gas-sensing performance, highlighting the pivotal role it plays in achieving exceptional sensitivity, selectivity, and response kinetics. Additionally, we highlight the impact of doping and composite formation on improving the sensitivity of pure metal oxides and reducing their operation temperature. A discussion of recent advances and emerging trends in the field is also presented, shedding light on the potential of Sol-Gel-derived nanostructures to revolutionize the landscape of gas sensing technologies.https://www.mdpi.com/2079-4991/14/4/359Sol-Gelmetal oxidesnanostructureslow dimensionalgas sensors |
| spellingShingle | Marwa Ben Arbia Hicham Helal Elisabetta Comini Recent Advances in Low-Dimensional Metal Oxides via Sol-Gel Method for Gas Detection Nanomaterials Sol-Gel metal oxides nanostructures low dimensional gas sensors |
| title | Recent Advances in Low-Dimensional Metal Oxides via Sol-Gel Method for Gas Detection |
| title_full | Recent Advances in Low-Dimensional Metal Oxides via Sol-Gel Method for Gas Detection |
| title_fullStr | Recent Advances in Low-Dimensional Metal Oxides via Sol-Gel Method for Gas Detection |
| title_full_unstemmed | Recent Advances in Low-Dimensional Metal Oxides via Sol-Gel Method for Gas Detection |
| title_short | Recent Advances in Low-Dimensional Metal Oxides via Sol-Gel Method for Gas Detection |
| title_sort | recent advances in low dimensional metal oxides via sol gel method for gas detection |
| topic | Sol-Gel metal oxides nanostructures low dimensional gas sensors |
| url | https://www.mdpi.com/2079-4991/14/4/359 |
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