A TMO-ZnO Heterojunction-Based Sensor for Transformer Defect Detection: A DFT Study
The gas adsorption and sensing properties of a transition metal oxide (TMO)-ZnO heterojunction-based sensor for H<sub>2</sub>, CO, and C<sub>2</sub>H<sub>4</sub> are analyzed. It is found that CuO, Ag<sub>2</sub>O, and Cu<sub>2</sub>O stabl...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-06-01
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| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/15/11/856 |
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| Summary: | The gas adsorption and sensing properties of a transition metal oxide (TMO)-ZnO heterojunction-based sensor for H<sub>2</sub>, CO, and C<sub>2</sub>H<sub>4</sub> are analyzed. It is found that CuO, Ag<sub>2</sub>O, and Cu<sub>2</sub>O stably composite onto the surface of ZnO by forming heterojunctions, which helps to improve the gas sensing and selectivity of the sensor. The adsorption results show that CuO-ZnO shows physical adsorption for H<sub>2</sub> and good gas sensing performance for CO and C<sub>2</sub>H<sub>4</sub>, while Ag<sub>2</sub>O-ZnO and Cu<sub>2</sub>O-ZnO have significant responses for H<sub>2</sub>, CO, and C<sub>2</sub>H<sub>4</sub>. In addition, the introduction of the TMO-ZnO heterojunction structure can effectively avoid the sensor poisoning phenomenon, as the gas adsorption process does not destroy the original geometric configuration of the heterojunction. This study lays a theoretical foundation for preparing TMO-ZnO heterojunction-based sensors for transformer defect detection and energy efficiency analysis. |
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| ISSN: | 2079-4991 |