Efficient visible-light-driven alcohol oxidation coupled hydrogen production on 0D/0D “n-NiWO4/p-CdS” S-scheme heterojunction
The theory of S-scheme transfer mechanism have significant implications for exploring the mechanism of photocatalytic carrier migration and its intrinsic dynamics. Modeled NiWO4/CdS heterojunction photocatalyst (referred to as NWO/CS) was synthesized using a simple hydrothermal method and applied fo...
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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/S2352847824002363 |
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| author | Yanfang Tao Sujuan Zhang Jinfeng Zhang Zhongliao Wang Gaoli Chen Xiuzhen Zheng Shifu Chen |
| author_facet | Yanfang Tao Sujuan Zhang Jinfeng Zhang Zhongliao Wang Gaoli Chen Xiuzhen Zheng Shifu Chen |
| author_sort | Yanfang Tao |
| collection | DOAJ |
| description | The theory of S-scheme transfer mechanism have significant implications for exploring the mechanism of photocatalytic carrier migration and its intrinsic dynamics. Modeled NiWO4/CdS heterojunction photocatalyst (referred to as NWO/CS) was synthesized using a simple hydrothermal method and applied for alcohol oxidation coupled with H2 production. Systematically investigates the factors contributing to its enhanced performance and the internal charge transfer mechanisms. The 28% NWO/CS composite exhibited the highest activity, with a H2 production and the aldehyde generation rates of 16.08 mmol⋅g−1⋅h−1 and 16.88 mmol⋅g−1⋅h−1, which are about 320 times higher than those of NiWO4 (0.05 mmol⋅g−1⋅h−1 and 0.06 mmol⋅g−1⋅h−1) and 16 times higher than that of CdS (1.09 mmol⋅g−1⋅h−1 and 1.12 mmol⋅g−1⋅h−1). Based on the in-situ XPS, transient surface photovoltage, theoretical calculations, and other physicochemical characterization results, we have confirmed that the built-in electric field formed at the interface and the transfer of photogenerated charges follows the S-scheme mechanism between relative “n-NiWO4” and relative “p-CdS” are the key factors that promote efficient charge separation and significantly enhance the subsequent reaction activity. This work provides a theoretical basis for improving photocatalytic performance and understanding photocatalytic mechanisms. |
| format | Article |
| id | doaj-art-c5ef883d19fe46d59a46d701d3d3a445 |
| institution | Kabale University |
| issn | 2352-8478 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
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| series | Journal of Materiomics |
| spelling | doaj-art-c5ef883d19fe46d59a46d701d3d3a4452025-08-20T03:44:28ZengElsevierJournal of Materiomics2352-84782025-07-0111410099710.1016/j.jmat.2024.100997Efficient visible-light-driven alcohol oxidation coupled hydrogen production on 0D/0D “n-NiWO4/p-CdS” S-scheme heterojunctionYanfang Tao0Sujuan Zhang1Jinfeng Zhang2Zhongliao Wang3Gaoli Chen4Xiuzhen Zheng5Shifu Chen6Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, College of Chemistry and Material Science, Huaibei Normal University, Huaibei, 235000, Anhui, ChinaKey Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, College of Chemistry and Material Science, Huaibei Normal University, Huaibei, 235000, Anhui, China; Corresponding author.College of Physics and Electronic Information, Huaibei Normal University, Huaibei, 235000, Anhui, China; Corresponding author.College of Physics and Electronic Information, Huaibei Normal University, Huaibei, 235000, Anhui, ChinaKey Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, College of Chemistry and Material Science, Huaibei Normal University, Huaibei, 235000, Anhui, ChinaKey Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, College of Chemistry and Material Science, Huaibei Normal University, Huaibei, 235000, Anhui, ChinaKey Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, College of Chemistry and Material Science, Huaibei Normal University, Huaibei, 235000, Anhui, China; Corresponding author.The theory of S-scheme transfer mechanism have significant implications for exploring the mechanism of photocatalytic carrier migration and its intrinsic dynamics. Modeled NiWO4/CdS heterojunction photocatalyst (referred to as NWO/CS) was synthesized using a simple hydrothermal method and applied for alcohol oxidation coupled with H2 production. Systematically investigates the factors contributing to its enhanced performance and the internal charge transfer mechanisms. The 28% NWO/CS composite exhibited the highest activity, with a H2 production and the aldehyde generation rates of 16.08 mmol⋅g−1⋅h−1 and 16.88 mmol⋅g−1⋅h−1, which are about 320 times higher than those of NiWO4 (0.05 mmol⋅g−1⋅h−1 and 0.06 mmol⋅g−1⋅h−1) and 16 times higher than that of CdS (1.09 mmol⋅g−1⋅h−1 and 1.12 mmol⋅g−1⋅h−1). Based on the in-situ XPS, transient surface photovoltage, theoretical calculations, and other physicochemical characterization results, we have confirmed that the built-in electric field formed at the interface and the transfer of photogenerated charges follows the S-scheme mechanism between relative “n-NiWO4” and relative “p-CdS” are the key factors that promote efficient charge separation and significantly enhance the subsequent reaction activity. This work provides a theoretical basis for improving photocatalytic performance and understanding photocatalytic mechanisms.http://www.sciencedirect.com/science/article/pii/S2352847824002363S-SchemeNiWO4/CdSBuilt-in electric fieldPhotogenerated charge transfer |
| spellingShingle | Yanfang Tao Sujuan Zhang Jinfeng Zhang Zhongliao Wang Gaoli Chen Xiuzhen Zheng Shifu Chen Efficient visible-light-driven alcohol oxidation coupled hydrogen production on 0D/0D “n-NiWO4/p-CdS” S-scheme heterojunction Journal of Materiomics S-Scheme NiWO4/CdS Built-in electric field Photogenerated charge transfer |
| title | Efficient visible-light-driven alcohol oxidation coupled hydrogen production on 0D/0D “n-NiWO4/p-CdS” S-scheme heterojunction |
| title_full | Efficient visible-light-driven alcohol oxidation coupled hydrogen production on 0D/0D “n-NiWO4/p-CdS” S-scheme heterojunction |
| title_fullStr | Efficient visible-light-driven alcohol oxidation coupled hydrogen production on 0D/0D “n-NiWO4/p-CdS” S-scheme heterojunction |
| title_full_unstemmed | Efficient visible-light-driven alcohol oxidation coupled hydrogen production on 0D/0D “n-NiWO4/p-CdS” S-scheme heterojunction |
| title_short | Efficient visible-light-driven alcohol oxidation coupled hydrogen production on 0D/0D “n-NiWO4/p-CdS” S-scheme heterojunction |
| title_sort | efficient visible light driven alcohol oxidation coupled hydrogen production on 0d 0d n niwo4 p cds s scheme heterojunction |
| topic | S-Scheme NiWO4/CdS Built-in electric field Photogenerated charge transfer |
| url | http://www.sciencedirect.com/science/article/pii/S2352847824002363 |
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