Robust photo-assisted removal of NO at room temperature: Experimental and density functional theory calculation with optical carrier
Photo-assisted SCR (PSCR) offers a potential solution for removal of NO at room temperature. MnTiOx as PSCR catalyst exhibits superior performance with NO removal of 100% at the room temperature. Electron paramagnetic resonance (EPR) analysis revealed the presence of numerous oxygen vacancies on MnT...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-08-01
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| Series: | Green Energy & Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468025722000036 |
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| author | Yanqin Li Junqi Tian Zhisong Liu Zhongqi Liu Dong Dong Fu Wang Wei Wang Minmin Liu Jianming Dan Yongsheng Li Feng Yu Bin Dai Yunbo Yu |
| author_facet | Yanqin Li Junqi Tian Zhisong Liu Zhongqi Liu Dong Dong Fu Wang Wei Wang Minmin Liu Jianming Dan Yongsheng Li Feng Yu Bin Dai Yunbo Yu |
| author_sort | Yanqin Li |
| collection | DOAJ |
| description | Photo-assisted SCR (PSCR) offers a potential solution for removal of NO at room temperature. MnTiOx as PSCR catalyst exhibits superior performance with NO removal of 100% at the room temperature. Electron paramagnetic resonance (EPR) analysis revealed the presence of numerous oxygen vacancies on MnTiOx. Optical carrier density functional theory (DFT) calculations showed that the three-dimensional orbital hybridization of Mn and Ti is significantly enhanced under light irradiation. The MnTiOx catalyst exhibited excellent electron–hole separation ability, which can adsorbe NH3 and dissociate to form NH2 fragments and H atoms. In-situ diffuse reflectance infrared fourier-transform spectroscopy (DRIFTS) indicated that the optical carrier enhanced NH3 adsorption on MnTiOx, which makes it possess excellent PSCR activity. This work provided an additional strategy to NO removal with PSCR catalysts and showed potential for use in photocatalysis. |
| first_indexed | 2024-03-13T00:54:57Z |
| format | Article |
| id | doaj.art-3018dda6dda04ef99c33677b26e79434 |
| institution | Directory Open Access Journal |
| issn | 2468-0257 |
| language | English |
| last_indexed | 2024-03-13T00:54:57Z |
| publishDate | 2023-08-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Green Energy & Environment |
| spelling | doaj.art-3018dda6dda04ef99c33677b26e794342023-07-07T04:27:39ZengKeAi Communications Co., Ltd.Green Energy & Environment2468-02572023-08-018411021116Robust photo-assisted removal of NO at room temperature: Experimental and density functional theory calculation with optical carrierYanqin Li0Junqi Tian1Zhisong Liu2Zhongqi Liu3Dong Dong4Fu Wang5Wei Wang6Minmin Liu7Jianming Dan8Yongsheng Li9Feng Yu10Bin Dai11Yunbo Yu12Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, ChinaKey Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, ChinaKey Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, ChinaResearch Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, ChinaFermiTech (Beijing) Co. Ltd., Beijing, 100083, ChinaSchool of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, ChinaKey Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, ChinaKey Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, ChinaKey Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, ChinaLab of Low-Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai, 200237, ChinaKey Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, China; Bingtuan Industrial Technology Research Institute, Shihezi University, Shihezi, 832003, China; Corresponding authors.Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, China; Corresponding authors.Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Corresponding authors.Photo-assisted SCR (PSCR) offers a potential solution for removal of NO at room temperature. MnTiOx as PSCR catalyst exhibits superior performance with NO removal of 100% at the room temperature. Electron paramagnetic resonance (EPR) analysis revealed the presence of numerous oxygen vacancies on MnTiOx. Optical carrier density functional theory (DFT) calculations showed that the three-dimensional orbital hybridization of Mn and Ti is significantly enhanced under light irradiation. The MnTiOx catalyst exhibited excellent electron–hole separation ability, which can adsorbe NH3 and dissociate to form NH2 fragments and H atoms. In-situ diffuse reflectance infrared fourier-transform spectroscopy (DRIFTS) indicated that the optical carrier enhanced NH3 adsorption on MnTiOx, which makes it possess excellent PSCR activity. This work provided an additional strategy to NO removal with PSCR catalysts and showed potential for use in photocatalysis.http://www.sciencedirect.com/science/article/pii/S2468025722000036Mixed metal oxidePhotoselective catalytic reductionPhotocatalystDenitrationRoom-temperature catalysis |
| spellingShingle | Yanqin Li Junqi Tian Zhisong Liu Zhongqi Liu Dong Dong Fu Wang Wei Wang Minmin Liu Jianming Dan Yongsheng Li Feng Yu Bin Dai Yunbo Yu Robust photo-assisted removal of NO at room temperature: Experimental and density functional theory calculation with optical carrier Green Energy & Environment Mixed metal oxide Photoselective catalytic reduction Photocatalyst Denitration Room-temperature catalysis |
| title | Robust photo-assisted removal of NO at room temperature: Experimental and density functional theory calculation with optical carrier |
| title_full | Robust photo-assisted removal of NO at room temperature: Experimental and density functional theory calculation with optical carrier |
| title_fullStr | Robust photo-assisted removal of NO at room temperature: Experimental and density functional theory calculation with optical carrier |
| title_full_unstemmed | Robust photo-assisted removal of NO at room temperature: Experimental and density functional theory calculation with optical carrier |
| title_short | Robust photo-assisted removal of NO at room temperature: Experimental and density functional theory calculation with optical carrier |
| title_sort | robust photo assisted removal of no at room temperature experimental and density functional theory calculation with optical carrier |
| topic | Mixed metal oxide Photoselective catalytic reduction Photocatalyst Denitration Room-temperature catalysis |
| url | http://www.sciencedirect.com/science/article/pii/S2468025722000036 |
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