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In situ polymerization-induced confined aggregation of poly(ionic liquid)-BiOBr nanosheets for enhanced photocatalytic activity.

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Title: In situ polymerization-induced confined aggregation of poly(ionic liquid)-BiOBr nanosheets for enhanced photocatalytic activity.
Authors: Yu, Li-Min1 (AUTHOR), Zhang, Yong-Ya1 (AUTHOR) zhangyongya_1990@126.com, Wang, Li-Jing1 (AUTHOR), Li, Huan-Ning1 (AUTHOR), Li, Pan1 (AUTHOR), Men, Jia-Qi1 (AUTHOR), Wei, Wei1 (AUTHOR) weiweizzuli@163.com, Li, Shi-Jie1,2 (AUTHOR) lishijie@zjou.edu.cn
Source: Environmental Research. Apr2026, Vol. 296, pN.PAG-N.PAG. 1p.
Subjects: Photocatalysis, Oxygen vacancy, Photocatalysts, Polymerization, Nanostructured materials, Polymerized ionic liquids, Electric fields
Abstract: Two-dimensional semiconductor nanosheets represent a kind of promising photocatalysts for environmental improvement and clean production, however, insufficient interface defects and weak built-in electric field limit resultful electron-hole separation and photocatalytic performance. Herein, we propose a novel strategy involving in situ confined aggregation of bismuth oxybromide (BiOBr) using poly (ionic liquid) (PIL) networks. By employing a bromine-containing imidazolium ionic liquid as both Br source and monomer, PIL networks confined defective BiOBr composite (BiOBr-PIL) is synthesized through in situ polymerization that spatially restricts the aggregation of BiOBr nanosheets. At the optimal Bi/VBImBr ratio of 1:3, the positively charged PIL layer around BiOBr nanosheets establishes a built-in electric field and induces the electrostatic repulsion, effectively suppressing nanosheet aggregation and promoting the formation of oxygen vacancies. These features collectively enhance charge separation and accelerate reactive radicals production, leading to significantly improved photocatalytic activity in both tetracycline degradation and CO 2 photoreduction, coupled with excellent stability and practical application potential. [Display omitted] • Novel confined growth strategy is developed to synthesize PIL-coated BiOBr nanosheets. • VBImBr acts as both Br source and monomer for simultaneous synthesis. • PIL coating creates built-in electric field and oxygen vacancies. • BiOBr-PIL exhibits superior photocatalysis result of CO 2 reduction and degradation. • Mechanistic insights reveal that ·O 2 − and ·OH are the main active species. [ABSTRACT FROM AUTHOR]
Copyright of Environmental Research is the property of Academic Press Inc. 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.)
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DbLabel: Engineering Source
An: 192229765
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  Label: Title
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  Data: In situ polymerization-induced confined aggregation of poly(ionic liquid)-BiOBr nanosheets for enhanced photocatalytic activity.
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  Data: <searchLink fieldCode="AR" term="%22Yu%2C+Li-Min%22">Yu, Li-Min</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Yong-Ya%22">Zhang, Yong-Ya</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhangyongya_1990@126.com</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Li-Jing%22">Wang, Li-Jing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Huan-Ning%22">Li, Huan-Ning</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Pan%22">Li, Pan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Men%2C+Jia-Qi%22">Men, Jia-Qi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wei%2C+Wei%22">Wei, Wei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> weiweizzuli@163.com</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Shi-Jie%22">Li, Shi-Jie</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> lishijie@zjou.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Environmental+Research%22">Environmental Research</searchLink>. Apr2026, Vol. 296, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Photocatalysis%22">Photocatalysis</searchLink><br /><searchLink fieldCode="DE" term="%22Oxygen+vacancy%22">Oxygen vacancy</searchLink><br /><searchLink fieldCode="DE" term="%22Photocatalysts%22">Photocatalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Polymerization%22">Polymerization</searchLink><br /><searchLink fieldCode="DE" term="%22Nanostructured+materials%22">Nanostructured materials</searchLink><br /><searchLink fieldCode="DE" term="%22Polymerized+ionic+liquids%22">Polymerized ionic liquids</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+fields%22">Electric fields</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Two-dimensional semiconductor nanosheets represent a kind of promising photocatalysts for environmental improvement and clean production, however, insufficient interface defects and weak built-in electric field limit resultful electron-hole separation and photocatalytic performance. Herein, we propose a novel strategy involving in situ confined aggregation of bismuth oxybromide (BiOBr) using poly (ionic liquid) (PIL) networks. By employing a bromine-containing imidazolium ionic liquid as both Br source and monomer, PIL networks confined defective BiOBr composite (BiOBr-PIL) is synthesized through in situ polymerization that spatially restricts the aggregation of BiOBr nanosheets. At the optimal Bi/VBImBr ratio of 1:3, the positively charged PIL layer around BiOBr nanosheets establishes a built-in electric field and induces the electrostatic repulsion, effectively suppressing nanosheet aggregation and promoting the formation of oxygen vacancies. These features collectively enhance charge separation and accelerate reactive radicals production, leading to significantly improved photocatalytic activity in both tetracycline degradation and CO 2 photoreduction, coupled with excellent stability and practical application potential. [Display omitted] • Novel confined growth strategy is developed to synthesize PIL-coated BiOBr nanosheets. • VBImBr acts as both Br source and monomer for simultaneous synthesis. • PIL coating creates built-in electric field and oxygen vacancies. • BiOBr-PIL exhibits superior photocatalysis result of CO 2 reduction and degradation. • Mechanistic insights reveal that ·O 2 − and ·OH are the main active species. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Environmental Research is the property of Academic Press Inc. 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:
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      – Type: doi
        Value: 10.1016/j.envres.2026.123991
    Languages:
      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Photocatalysis
        Type: general
      – SubjectFull: Oxygen vacancy
        Type: general
      – SubjectFull: Photocatalysts
        Type: general
      – SubjectFull: Polymerization
        Type: general
      – SubjectFull: Nanostructured materials
        Type: general
      – SubjectFull: Polymerized ionic liquids
        Type: general
      – SubjectFull: Electric fields
        Type: general
    Titles:
      – TitleFull: In situ polymerization-induced confined aggregation of poly(ionic liquid)-BiOBr nanosheets for enhanced photocatalytic activity.
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            NameFull: Yu, Li-Min
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            NameFull: Zhang, Yong-Ya
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            NameFull: Wang, Li-Jing
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            NameFull: Li, Huan-Ning
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            NameFull: Li, Pan
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            – D: 01
              M: 04
              Text: Apr2026
              Type: published
              Y: 2026
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              Value: 296
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            – TitleFull: Environmental Research
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