Preparation and Gas-Sensitive Properties of Square–Star-Shaped Leaf-Like BiVO<sub>4</sub> Nanomaterials
In this study, square–star-shaped leaf-like BiVO<sub>4</sub> nanomaterials were successfully synthesized using a conventional hydrothermal method. The microstructure, elemental composition, and gas-sensing performance of the materials were thoroughly investigated. Morphological analysis...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
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| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/15/2/127 |
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| Summary: | In this study, square–star-shaped leaf-like BiVO<sub>4</sub> nanomaterials were successfully synthesized using a conventional hydrothermal method. The microstructure, elemental composition, and gas-sensing performance of the materials were thoroughly investigated. Morphological analysis revealed that BiVO<sub>4</sub> prepared at different reaction temperatures exhibited square–star-shaped leaf-like structures, with the most regular and dense structures formed at 150 °C, exhibiting a large specific surface area of 2.84 m<sup>2</sup>/g. The response performance of the BiVO<sub>4</sub> gas sensors to different target gases was evaluated, and the results showed that the prepared BiVO<sub>4</sub> gas sensor exhibited a strong response to NH<sub>3</sub>. At the optimal operating temperature of 300 °C, its sensitivity to 5 ppm NH<sub>3</sub> reached 13.3, with a response time of 28 s and a recovery time of 16 s. Moreover, the gas sensor exhibited excellent repeatability and anti-interference performance. These findings indicate that square–star-shaped leaf-like BiVO<sub>4</sub> holds great potential in environmental monitoring and industrial safety detection, offering new insights for the development of high-performance gas sensors. |
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| ISSN: | 2079-4991 |