Surface-Engineered MoO<sub>x</sub>/CN Heterostructures Enable Long-Term SF<sub>6</sub> Photodegradation via Suppressed Fluoridation
Sulfur hexafluoride (SF<sub>6</sub>), the strongest greenhouse gas, has great challenges in degradation because of its stable structure, posing significant environmental concerns. Photocatalysis offers an environmentally friendly, low-energy solution, but the fluoride deposition on catal...
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MDPI AG
2025-03-01
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| Series: | Molecules |
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| author | Wenhui Zhou Boxu Dong Ziqi Si Yushuai Xu Xinhua He Ziyi Zhan Yaru Zhang Chaoyu Song Zhuoqian Lv Jiantao Zai Xuefeng Qian |
| author_facet | Wenhui Zhou Boxu Dong Ziqi Si Yushuai Xu Xinhua He Ziyi Zhan Yaru Zhang Chaoyu Song Zhuoqian Lv Jiantao Zai Xuefeng Qian |
| author_sort | Wenhui Zhou |
| collection | DOAJ |
| description | Sulfur hexafluoride (SF<sub>6</sub>), the strongest greenhouse gas, has great challenges in degradation because of its stable structure, posing significant environmental concerns. Photocatalysis offers an environmentally friendly, low-energy solution, but the fluoride deposition on catalysts reduces their activity, thus limiting their large-scale application. To prevent catalyst fluoride poisoning, we report a thin-layer graphitic carbon nitride (CN) material loaded with MoO<sub>x</sub> (CNM) that resists fluoride deposition for long-term SF<sub>6</sub> degradation. By combining molecular structure design and nanostructure regulation, we construct a photocatalyst with enhanced charge carrier mobility and reduced transport distances. We find that the CNM exhibits a high specific surface area, increased contact between reactants and active sites, and efficient electron–hole separation due to the Mo-N bonds, achieving an SF<sub>6</sub> degradation efficiency of 1.73 mmol/g after one day due to the prolonged catalytic durability of the catalyst, which is eight times higher than pristine g-C<sub>3</sub>N<sub>4</sub> (0.21 mmol/g). We demonstrate the potential of CNMs for low-energy, high-efficiency SF<sub>6</sub> degradation, offering a new approach to mitigate the environmental impact of this potent greenhouse gas. We envision that this study will inspire further research into advanced photocatalytic materials for environmental remediation, contributing to global efforts in combating climate change. |
| format | Article |
| id | doaj-art-10b26f5e8c5a4d42a3ba823ea3e7b730 |
| institution | DOAJ |
| issn | 1420-3049 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj-art-10b26f5e8c5a4d42a3ba823ea3e7b7302025-08-20T03:08:55ZengMDPI AGMolecules1420-30492025-03-01307148110.3390/molecules30071481Surface-Engineered MoO<sub>x</sub>/CN Heterostructures Enable Long-Term SF<sub>6</sub> Photodegradation via Suppressed FluoridationWenhui Zhou0Boxu Dong1Ziqi Si2Yushuai Xu3Xinhua He4Ziyi Zhan5Yaru Zhang6Chaoyu Song7Zhuoqian Lv8Jiantao Zai9Xuefeng Qian10Shaoxing Research Institute of Renewable Energy and Molecular Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaShaoxing Research Institute of Renewable Energy and Molecular Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaShaoxing Research Institute of Renewable Energy and Molecular Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaShaoxing Research Institute of Renewable Energy and Molecular Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaShaoxing Research Institute of Renewable Energy and Molecular Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaShaoxing Research Institute of Renewable Energy and Molecular Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaShaoxing Research Institute of Renewable Energy and Molecular Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaShaoxing Research Institute of Renewable Energy and Molecular Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaShaoxing Research Institute of Renewable Energy and Molecular Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaShaoxing Research Institute of Renewable Energy and Molecular Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaShaoxing Research Institute of Renewable Energy and Molecular Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaSulfur hexafluoride (SF<sub>6</sub>), the strongest greenhouse gas, has great challenges in degradation because of its stable structure, posing significant environmental concerns. Photocatalysis offers an environmentally friendly, low-energy solution, but the fluoride deposition on catalysts reduces their activity, thus limiting their large-scale application. To prevent catalyst fluoride poisoning, we report a thin-layer graphitic carbon nitride (CN) material loaded with MoO<sub>x</sub> (CNM) that resists fluoride deposition for long-term SF<sub>6</sub> degradation. By combining molecular structure design and nanostructure regulation, we construct a photocatalyst with enhanced charge carrier mobility and reduced transport distances. We find that the CNM exhibits a high specific surface area, increased contact between reactants and active sites, and efficient electron–hole separation due to the Mo-N bonds, achieving an SF<sub>6</sub> degradation efficiency of 1.73 mmol/g after one day due to the prolonged catalytic durability of the catalyst, which is eight times higher than pristine g-C<sub>3</sub>N<sub>4</sub> (0.21 mmol/g). We demonstrate the potential of CNMs for low-energy, high-efficiency SF<sub>6</sub> degradation, offering a new approach to mitigate the environmental impact of this potent greenhouse gas. We envision that this study will inspire further research into advanced photocatalytic materials for environmental remediation, contributing to global efforts in combating climate change.https://www.mdpi.com/1420-3049/30/7/1481photocatalysissulfur hexafluoride degradationstabilityheterostructures |
| spellingShingle | Wenhui Zhou Boxu Dong Ziqi Si Yushuai Xu Xinhua He Ziyi Zhan Yaru Zhang Chaoyu Song Zhuoqian Lv Jiantao Zai Xuefeng Qian Surface-Engineered MoO<sub>x</sub>/CN Heterostructures Enable Long-Term SF<sub>6</sub> Photodegradation via Suppressed Fluoridation Molecules photocatalysis sulfur hexafluoride degradation stability heterostructures |
| title | Surface-Engineered MoO<sub>x</sub>/CN Heterostructures Enable Long-Term SF<sub>6</sub> Photodegradation via Suppressed Fluoridation |
| title_full | Surface-Engineered MoO<sub>x</sub>/CN Heterostructures Enable Long-Term SF<sub>6</sub> Photodegradation via Suppressed Fluoridation |
| title_fullStr | Surface-Engineered MoO<sub>x</sub>/CN Heterostructures Enable Long-Term SF<sub>6</sub> Photodegradation via Suppressed Fluoridation |
| title_full_unstemmed | Surface-Engineered MoO<sub>x</sub>/CN Heterostructures Enable Long-Term SF<sub>6</sub> Photodegradation via Suppressed Fluoridation |
| title_short | Surface-Engineered MoO<sub>x</sub>/CN Heterostructures Enable Long-Term SF<sub>6</sub> Photodegradation via Suppressed Fluoridation |
| title_sort | surface engineered moo sub x sub cn heterostructures enable long term sf sub 6 sub photodegradation via suppressed fluoridation |
| topic | photocatalysis sulfur hexafluoride degradation stability heterostructures |
| url | https://www.mdpi.com/1420-3049/30/7/1481 |
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