Large-sized alpha-MoO3 layered single crystals for superior NO2 gas sensing
Description
Molybdenum trioxide (MoO3) has attracted considerable research interest due to its unique structural and electronic properties. Herein, we report a monolithic and scalable NO2 gas sensor based on centimeter-sized single-crystalline α-MoO3 synthesized via vapor phase transport method. A combination of advanced characterization probes were utilized to study morphology, composition and crystalline structures of the as-synthesized crystals. At the optimal operating temperature of 100 °C, the centimeter-sized α-MoO3 single crystal based sensor shows an outstanding sensitivity towards NO2 with a limit of detection as low as 5 ppb, as well as superior selectivity and reversibility. The scalability and the intrinsic sensing response are further demonstrated by microscale sensor devices fabricated on individual exfoliated α-MoO3 nanoribbons. Our study presents promising opportunities to develop a high-performance gas sensing platform based on crystalline α-MoO3 to enable monolithic, scalable and integrable sensing technologies.
Impact and interest:
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| ID Code: | 229108 | ||||||||||
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| Item Type: | Contribution to Journal (Journal Article) | ||||||||||
| Refereed: | Yes | ||||||||||
| ORCID iD: |
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| Additional Information: | Founding source: The Australian Research Council (Grant No. CE17010003) (Grant No. DE220100154) (Grant No. FT160100207) (Grant No. DP200102546). | ||||||||||
| Measurements or Duration: | 12 pages | ||||||||||
| Keywords: | Centimeter-sized, Gas sensor, Integrable, Molybdenum trioxide, Nitrogen dioxide, Single crystalline, Ultrasensitive | ||||||||||
| DOI: | 10.1016/j.apsusc.2022.152793 | ||||||||||
| ISSN: | 0169-4332 | ||||||||||
| Pure ID: | 107324020 | ||||||||||
| Divisions: | Current > Research Centres > Centre for Materials Science Current > Research Centres > Centre for the Environment Current > QUT Faculties and Divisions > Academic Division Current > QUT Faculties and Divisions > Faculty of Science Current > Schools > School of Chemistry & Physics Current > QUT Faculties and Divisions > Faculty of Engineering Current > Schools > School of Mechanical, Medical & Process Engineering |
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| Copyright Owner: | 2022 Elsevier B.V. | ||||||||||
| Copyright Statement: | This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au | ||||||||||
| Deposited On: | 29 Mar 2022 01:17 | ||||||||||
| Last Modified: | 24 Apr 2024 20:40 |
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