S-scheme MnIn2S4/COF heterojunction for visible-light-driven H2O2 generation: toward green and efficient water disinfection.
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| Title: | S-scheme MnIn2S4/COF heterojunction for visible-light-driven H2O2 generation: toward green and efficient water disinfection. |
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| Authors: | Lai, Xiaofang1 (AUTHOR), Lin, Yuling1 (AUTHOR), Yang, Wenjun1 (AUTHOR), Chen, Ziyan1 (AUTHOR), Chen, Qiaoshan1 (AUTHOR), Huang, Guocheng1 (AUTHOR) huanggch@fzu.edu.cn, Bi, Jinhong1,2 (AUTHOR) bijinhong@fzu.edu.cn |
| Source: | Chemical Engineering Science. Dec2025, Vol. 318, pN.PAG-N.PAG. 1p. |
| Subjects: | Hydrogen peroxide, Water disinfection, Photocatalysis, Water purification, Photocatalysts, Bacterial inactivation, Heterojunctions |
| Abstract: | [Display omitted] • MnIn 2 S 4 /COF heterojunctions enable H 2 O 2 generation and disinfection in diverse systems. • S-scheme charge transfer confirmed by in-situ XPS and KPFM. • Enhanced internal electric field promotes photogenerated carrier separation. • H 2 O 2 and O 2 − synergistically achieve bacterial inactivation. • Bacterial death results from oxidative stress and metabolic disruption. Hydrogen peroxide (H 2 O 2) is recognized as an environmentally benign oxidant with widespread applications in the water treatment and disinfection industry. However, conventional anthraquinone-based methods for H 2 O 2 production are characterized by high energy consumption and the generation of hazardous byproducts, necessitating the development of more sustainable alternatives. In this study, we present an S-scheme heterojunction constructed from MnIn 2 S 4 and a covalent organic framework (COF), which exhibits an enhanced internal electric field (IEF) to facilitate efficient photocatalytic H 2 O 2 synthesis without the use of sacrificial agents. This heterojunction demonstrates superior charge separation and transfer capabilities, achieving a remarkably high H 2 O 2 production rate of 4007 μmol·g−1·h−1 under visible light irradiation and an unprecedented apparent quantum yield of 7.14%. Mechanistic investigations reveal that the S-scheme charge transfer pathway optimizes redox reactions, while the photosynthesized H 2 O 2 and its precursors, superoxide radicals, synergistically disrupt bacterial defense mechanisms by inhibiting key antioxidant enzymes (e.g., superoxide dismutase, catalase, and glutathione) and impairing energy metabolism, ultimately leading to bacterial cell death. Notably, the optimal sample exhibits sustained performance in diverse real water matrices, including river and seawater, under natural sunlight conditions, with negligible effluent toxicity. This work provides a sustainable strategy for H 2 O 2 production and water purification, offering insights into the rational design of advanced photocatalytic materials for the water disinfection industry. [ABSTRACT FROM AUTHOR] |
| Copyright of Chemical Engineering Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 187721119 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: S-scheme MnIn2S4/COF heterojunction for visible-light-driven H2O2 generation: toward green and efficient water disinfection. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Lai%2C+Xiaofang%22">Lai, Xiaofang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lin%2C+Yuling%22">Lin, Yuling</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Wenjun%22">Yang, Wenjun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Ziyan%22">Chen, Ziyan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Qiaoshan%22">Chen, Qiaoshan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huang%2C+Guocheng%22">Huang, Guocheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> huanggch@fzu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Bi%2C+Jinhong%22">Bi, Jinhong</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> bijinhong@fzu.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Chemical+Engineering+Science%22">Chemical Engineering Science</searchLink>. Dec2025, Vol. 318, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Hydrogen+peroxide%22">Hydrogen peroxide</searchLink><br /><searchLink fieldCode="DE" term="%22Water+disinfection%22">Water disinfection</searchLink><br /><searchLink fieldCode="DE" term="%22Photocatalysis%22">Photocatalysis</searchLink><br /><searchLink fieldCode="DE" term="%22Water+purification%22">Water purification</searchLink><br /><searchLink fieldCode="DE" term="%22Photocatalysts%22">Photocatalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Bacterial+inactivation%22">Bacterial inactivation</searchLink><br /><searchLink fieldCode="DE" term="%22Heterojunctions%22">Heterojunctions</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: [Display omitted] • MnIn 2 S 4 /COF heterojunctions enable H 2 O 2 generation and disinfection in diverse systems. • S-scheme charge transfer confirmed by in-situ XPS and KPFM. • Enhanced internal electric field promotes photogenerated carrier separation. • H 2 O 2 and O 2 − synergistically achieve bacterial inactivation. • Bacterial death results from oxidative stress and metabolic disruption. Hydrogen peroxide (H 2 O 2) is recognized as an environmentally benign oxidant with widespread applications in the water treatment and disinfection industry. However, conventional anthraquinone-based methods for H 2 O 2 production are characterized by high energy consumption and the generation of hazardous byproducts, necessitating the development of more sustainable alternatives. In this study, we present an S-scheme heterojunction constructed from MnIn 2 S 4 and a covalent organic framework (COF), which exhibits an enhanced internal electric field (IEF) to facilitate efficient photocatalytic H 2 O 2 synthesis without the use of sacrificial agents. This heterojunction demonstrates superior charge separation and transfer capabilities, achieving a remarkably high H 2 O 2 production rate of 4007 μmol·g−1·h−1 under visible light irradiation and an unprecedented apparent quantum yield of 7.14%. Mechanistic investigations reveal that the S-scheme charge transfer pathway optimizes redox reactions, while the photosynthesized H 2 O 2 and its precursors, superoxide radicals, synergistically disrupt bacterial defense mechanisms by inhibiting key antioxidant enzymes (e.g., superoxide dismutase, catalase, and glutathione) and impairing energy metabolism, ultimately leading to bacterial cell death. Notably, the optimal sample exhibits sustained performance in diverse real water matrices, including river and seawater, under natural sunlight conditions, with negligible effluent toxicity. This work provides a sustainable strategy for H 2 O 2 production and water purification, offering insights into the rational design of advanced photocatalytic materials for the water disinfection industry. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Chemical Engineering Science is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.ces.2025.122177 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Hydrogen peroxide Type: general – SubjectFull: Water disinfection Type: general – SubjectFull: Photocatalysis Type: general – SubjectFull: Water purification Type: general – SubjectFull: Photocatalysts Type: general – SubjectFull: Bacterial inactivation Type: general – SubjectFull: Heterojunctions Type: general Titles: – TitleFull: S-scheme MnIn2S4/COF heterojunction for visible-light-driven H2O2 generation: toward green and efficient water disinfection. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Lai, Xiaofang – PersonEntity: Name: NameFull: Lin, Yuling – PersonEntity: Name: NameFull: Yang, Wenjun – PersonEntity: Name: NameFull: Chen, Ziyan – PersonEntity: Name: NameFull: Chen, Qiaoshan – PersonEntity: Name: NameFull: Huang, Guocheng – PersonEntity: Name: NameFull: Bi, Jinhong IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 00092509 Numbering: – Type: volume Value: 318 Titles: – TitleFull: Chemical Engineering Science Type: main |
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