Superposition of bulk and interface electric field for boosting charge transfer in Bi2MoO6/Bi19Br3S27 S-scheme heterojunctions
Coupling bulk and interface electric field for enhancing photogenerated charge carrier separation represents an effective strategy toward enhancing photocatalytic performance due to the potential of superposition of electric field. However, the detailed mechanism of synergistic effect of the bulk an...
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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/S2352847824002351 |
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| author | Hui Yang Zhongliao Wang Jinfeng Zhang Kai Dai Jingxiang Low |
| author_facet | Hui Yang Zhongliao Wang Jinfeng Zhang Kai Dai Jingxiang Low |
| author_sort | Hui Yang |
| collection | DOAJ |
| description | Coupling bulk and interface electric field for enhancing photogenerated charge carrier separation represents an effective strategy toward enhancing photocatalytic performance due to the potential of superposition of electric field. However, the detailed mechanism of synergistic effect of the bulk and interface electric field in facilitating photogenerated charge carrier remains underexplored, limiting its wide applications. Herein, we integrate the bulk electric field of Bi2MoO6 (BMO) with interface electric field (IEF) of S-scheme heterojunction formed between BMO and Bi19Br3S27 (BBS) for enhancing photocatalytic performance. The two electric fields can not only superimpose for amplifying electric field strengths, but also act as the funnel for guiding photogenerated charge carrier migration towards specific regions for redox reactions. Moreover, the MoS bonds formed between BMO and BBS act as a channel for charge transfer, accelerating the charge transfer of the S-scheme and achieving effective charge separation. As a proof-of-concept, we employ optimized BMO/BBS S-scheme heterojunction for photocatalytic CO2 conversion, reaching about 32.4 times and 2.0 times to that of pristine BMO and unmodulated BMO/BBS for CO production. This method of promoting the IEF by coupling bulk and interface electric field provides new insights into the construction of S-scheme heterojunctions for photocatalysis. |
| format | Article |
| id | doaj-art-b799a8d69d0f4f288c800b6ee4521707 |
| institution | DOAJ |
| issn | 2352-8478 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materiomics |
| spelling | doaj-art-b799a8d69d0f4f288c800b6ee45217072025-08-20T02:54:22ZengElsevierJournal of Materiomics2352-84782025-07-0111410099610.1016/j.jmat.2024.100996Superposition of bulk and interface electric field for boosting charge transfer in Bi2MoO6/Bi19Br3S27 S-scheme heterojunctionsHui Yang0Zhongliao Wang1Jinfeng Zhang2Kai Dai3Jingxiang Low4Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University, Huaibei 235000, Anhui, ChinaAnhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University, Huaibei 235000, Anhui, ChinaAnhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University, Huaibei 235000, Anhui, ChinaAnhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University, Huaibei 235000, Anhui, China; Corresponding author.School of Physical Science and Technology, Tiangong University, Tianjin 300387, China; Corresponding author.Coupling bulk and interface electric field for enhancing photogenerated charge carrier separation represents an effective strategy toward enhancing photocatalytic performance due to the potential of superposition of electric field. However, the detailed mechanism of synergistic effect of the bulk and interface electric field in facilitating photogenerated charge carrier remains underexplored, limiting its wide applications. Herein, we integrate the bulk electric field of Bi2MoO6 (BMO) with interface electric field (IEF) of S-scheme heterojunction formed between BMO and Bi19Br3S27 (BBS) for enhancing photocatalytic performance. The two electric fields can not only superimpose for amplifying electric field strengths, but also act as the funnel for guiding photogenerated charge carrier migration towards specific regions for redox reactions. Moreover, the MoS bonds formed between BMO and BBS act as a channel for charge transfer, accelerating the charge transfer of the S-scheme and achieving effective charge separation. As a proof-of-concept, we employ optimized BMO/BBS S-scheme heterojunction for photocatalytic CO2 conversion, reaching about 32.4 times and 2.0 times to that of pristine BMO and unmodulated BMO/BBS for CO production. This method of promoting the IEF by coupling bulk and interface electric field provides new insights into the construction of S-scheme heterojunctions for photocatalysis.http://www.sciencedirect.com/science/article/pii/S2352847824002351Polarization electric fieldInternal electric fieldPhotocatalytic CO2 reductionS-scheme |
| spellingShingle | Hui Yang Zhongliao Wang Jinfeng Zhang Kai Dai Jingxiang Low Superposition of bulk and interface electric field for boosting charge transfer in Bi2MoO6/Bi19Br3S27 S-scheme heterojunctions Journal of Materiomics Polarization electric field Internal electric field Photocatalytic CO2 reduction S-scheme |
| title | Superposition of bulk and interface electric field for boosting charge transfer in Bi2MoO6/Bi19Br3S27 S-scheme heterojunctions |
| title_full | Superposition of bulk and interface electric field for boosting charge transfer in Bi2MoO6/Bi19Br3S27 S-scheme heterojunctions |
| title_fullStr | Superposition of bulk and interface electric field for boosting charge transfer in Bi2MoO6/Bi19Br3S27 S-scheme heterojunctions |
| title_full_unstemmed | Superposition of bulk and interface electric field for boosting charge transfer in Bi2MoO6/Bi19Br3S27 S-scheme heterojunctions |
| title_short | Superposition of bulk and interface electric field for boosting charge transfer in Bi2MoO6/Bi19Br3S27 S-scheme heterojunctions |
| title_sort | superposition of bulk and interface electric field for boosting charge transfer in bi2moo6 bi19br3s27 s scheme heterojunctions |
| topic | Polarization electric field Internal electric field Photocatalytic CO2 reduction S-scheme |
| url | http://www.sciencedirect.com/science/article/pii/S2352847824002351 |
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