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...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-06-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/15/11/856 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850128906184556544 |
|---|---|
| author | Jingyi Yan Weiju Dai Dexu Zou Haoruo Sun Chao Tang Yingang Gui |
| author_facet | Jingyi Yan Weiju Dai Dexu Zou Haoruo Sun Chao Tang Yingang Gui |
| author_sort | Jingyi Yan |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-566a2c4d0aa74a198b47fe241cd02ca3 |
| institution | OA Journals |
| issn | 2079-4991 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-566a2c4d0aa74a198b47fe241cd02ca32025-08-20T02:33:08ZengMDPI AGNanomaterials2079-49912025-06-01151185610.3390/nano15110856A TMO-ZnO Heterojunction-Based Sensor for Transformer Defect Detection: A DFT StudyJingyi Yan0Weiju Dai1Dexu Zou2Haoruo Sun3Chao Tang4Yingang Gui5Electric Power Research Institute of Yunnan Power Grid, Kunming 650214, ChinaElectric Power Research Institute of Yunnan Power Grid, Kunming 650214, ChinaElectric Power Research Institute of Yunnan Power Grid, Kunming 650214, ChinaElectric Power Research Institute of Yunnan Power Grid, Kunming 650214, ChinaCollege of Engineering and Technology, Southwest University, Chongqing 400716, ChinaCollege of Engineering and Technology, Southwest University, Chongqing 400716, ChinaThe 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.https://www.mdpi.com/2079-4991/15/11/856metal oxide heterojunctiondissolved gasesdensity functional theorytransformer defect detectionenergy efficiency analysis |
| spellingShingle | Jingyi Yan Weiju Dai Dexu Zou Haoruo Sun Chao Tang Yingang Gui A TMO-ZnO Heterojunction-Based Sensor for Transformer Defect Detection: A DFT Study Nanomaterials metal oxide heterojunction dissolved gases density functional theory transformer defect detection energy efficiency analysis |
| title | A TMO-ZnO Heterojunction-Based Sensor for Transformer Defect Detection: A DFT Study |
| title_full | A TMO-ZnO Heterojunction-Based Sensor for Transformer Defect Detection: A DFT Study |
| title_fullStr | A TMO-ZnO Heterojunction-Based Sensor for Transformer Defect Detection: A DFT Study |
| title_full_unstemmed | A TMO-ZnO Heterojunction-Based Sensor for Transformer Defect Detection: A DFT Study |
| title_short | A TMO-ZnO Heterojunction-Based Sensor for Transformer Defect Detection: A DFT Study |
| title_sort | tmo zno heterojunction based sensor for transformer defect detection a dft study |
| topic | metal oxide heterojunction dissolved gases density functional theory transformer defect detection energy efficiency analysis |
| url | https://www.mdpi.com/2079-4991/15/11/856 |
| work_keys_str_mv | AT jingyiyan atmoznoheterojunctionbasedsensorfortransformerdefectdetectionadftstudy AT weijudai atmoznoheterojunctionbasedsensorfortransformerdefectdetectionadftstudy AT dexuzou atmoznoheterojunctionbasedsensorfortransformerdefectdetectionadftstudy AT haoruosun atmoznoheterojunctionbasedsensorfortransformerdefectdetectionadftstudy AT chaotang atmoznoheterojunctionbasedsensorfortransformerdefectdetectionadftstudy AT yinganggui atmoznoheterojunctionbasedsensorfortransformerdefectdetectionadftstudy AT jingyiyan tmoznoheterojunctionbasedsensorfortransformerdefectdetectionadftstudy AT weijudai tmoznoheterojunctionbasedsensorfortransformerdefectdetectionadftstudy AT dexuzou tmoznoheterojunctionbasedsensorfortransformerdefectdetectionadftstudy AT haoruosun tmoznoheterojunctionbasedsensorfortransformerdefectdetectionadftstudy AT chaotang tmoznoheterojunctionbasedsensorfortransformerdefectdetectionadftstudy AT yinganggui tmoznoheterojunctionbasedsensorfortransformerdefectdetectionadftstudy |