Design of double oxygen vacancy-rich Bi2O2S0.8F0.4/BiOBr S-scheme heterojunction via tuning band structure for CO2 photoreduction
S-scheme heterojunction has garnered significant interest owing to its distinctive band structure and interfacial interaction. In this work, nanosheets-like Bi2O2S0.8F0.4/BiOBr heterojunction photocatalyst with dual surface oxygen vacancies was synthesized by epitaxial growing method. The experiment...
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| Format: | Article |
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Elsevier
2025-07-01
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| Series: | Journal of Materiomics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352847824002375 |
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| author | Xifeng Hou Chenbin Ai Songyu Yang Jianjun Zhang Yanfeng Zhang Jingze Liu |
| author_facet | Xifeng Hou Chenbin Ai Songyu Yang Jianjun Zhang Yanfeng Zhang Jingze Liu |
| author_sort | Xifeng Hou |
| collection | DOAJ |
| description | S-scheme heterojunction has garnered significant interest owing to its distinctive band structure and interfacial interaction. In this work, nanosheets-like Bi2O2S0.8F0.4/BiOBr heterojunction photocatalyst with dual surface oxygen vacancies was synthesized by epitaxial growing method. The experiment results revealed that the evolution rate of CO from CO2 photoreduction for optimal Bi2O2S0.8F0.4/BiOBr heterojunction was 219.3 μmol⸱g−1⸱h−1, being 9.8 times greater than that of pure BiOBr. The S-scheme band structure was shown to promote sunlight utilization, raise the reduction power of photogenerated electrons, and improve the separation and transfer of photogenerated charge carriers. Moreover, the presence of dual oxygen vacancies on the interfacial surface of Bi2O2S0.8F0.4/BiOBr heterojunction facilitates the adsorption and activation of CO2 and H2O molecules. The work focuses on the combined impact of the S-scheme band structure and oxygen vacancy on the property of photocatalytic reduction of CO2. The study presents a straightforward strategy for the on-site creation of S-scheme heterojunction with defect. |
| format | Article |
| id | doaj-art-cf5a36e5f7f64bf9b7146bc5a5b7c49d |
| institution | Kabale University |
| issn | 2352-8478 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materiomics |
| spelling | doaj-art-cf5a36e5f7f64bf9b7146bc5a5b7c49d2025-02-12T05:31:20ZengElsevierJournal of Materiomics2352-84782025-07-01114100998Design of double oxygen vacancy-rich Bi2O2S0.8F0.4/BiOBr S-scheme heterojunction via tuning band structure for CO2 photoreductionXifeng Hou0Chenbin Ai1Songyu Yang2Jianjun Zhang3Yanfeng Zhang4Jingze Liu5Hebei Key Laboratory of Animal Physiology, Biochemistry, and Molecular Biology, Hebei Collaborative Innovation Center for Eco-Environment, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, ChinaLaboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430078, ChinaLaboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430078, ChinaLaboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430078, ChinaNational Demonstration Center for Experimental Chemistry Education, Hebei Key Laboratory of Inorganic Nanomaterials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, 050024, China; Corresponding author.Hebei Key Laboratory of Animal Physiology, Biochemistry, and Molecular Biology, Hebei Collaborative Innovation Center for Eco-Environment, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China; Corresponding author.S-scheme heterojunction has garnered significant interest owing to its distinctive band structure and interfacial interaction. In this work, nanosheets-like Bi2O2S0.8F0.4/BiOBr heterojunction photocatalyst with dual surface oxygen vacancies was synthesized by epitaxial growing method. The experiment results revealed that the evolution rate of CO from CO2 photoreduction for optimal Bi2O2S0.8F0.4/BiOBr heterojunction was 219.3 μmol⸱g−1⸱h−1, being 9.8 times greater than that of pure BiOBr. The S-scheme band structure was shown to promote sunlight utilization, raise the reduction power of photogenerated electrons, and improve the separation and transfer of photogenerated charge carriers. Moreover, the presence of dual oxygen vacancies on the interfacial surface of Bi2O2S0.8F0.4/BiOBr heterojunction facilitates the adsorption and activation of CO2 and H2O molecules. The work focuses on the combined impact of the S-scheme band structure and oxygen vacancy on the property of photocatalytic reduction of CO2. The study presents a straightforward strategy for the on-site creation of S-scheme heterojunction with defect.http://www.sciencedirect.com/science/article/pii/S2352847824002375Bi2O2S0.8F0.4/BiOBrS-scheme heterojunctionOxygen vacancyPhotocatalytic CO2 reduction |
| spellingShingle | Xifeng Hou Chenbin Ai Songyu Yang Jianjun Zhang Yanfeng Zhang Jingze Liu Design of double oxygen vacancy-rich Bi2O2S0.8F0.4/BiOBr S-scheme heterojunction via tuning band structure for CO2 photoreduction Journal of Materiomics Bi2O2S0.8F0.4/BiOBr S-scheme heterojunction Oxygen vacancy Photocatalytic CO2 reduction |
| title | Design of double oxygen vacancy-rich Bi2O2S0.8F0.4/BiOBr S-scheme heterojunction via tuning band structure for CO2 photoreduction |
| title_full | Design of double oxygen vacancy-rich Bi2O2S0.8F0.4/BiOBr S-scheme heterojunction via tuning band structure for CO2 photoreduction |
| title_fullStr | Design of double oxygen vacancy-rich Bi2O2S0.8F0.4/BiOBr S-scheme heterojunction via tuning band structure for CO2 photoreduction |
| title_full_unstemmed | Design of double oxygen vacancy-rich Bi2O2S0.8F0.4/BiOBr S-scheme heterojunction via tuning band structure for CO2 photoreduction |
| title_short | Design of double oxygen vacancy-rich Bi2O2S0.8F0.4/BiOBr S-scheme heterojunction via tuning band structure for CO2 photoreduction |
| title_sort | design of double oxygen vacancy rich bi2o2s0 8f0 4 biobr s scheme heterojunction via tuning band structure for co2 photoreduction |
| topic | Bi2O2S0.8F0.4/BiOBr S-scheme heterojunction Oxygen vacancy Photocatalytic CO2 reduction |
| url | http://www.sciencedirect.com/science/article/pii/S2352847824002375 |
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