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Piezo-photocatalysis coupling in BiFeO3–CeO2 heterojunction with off-site dual-active centers for ultrafast heterogeneous Fenton-like reactions.

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Title: Piezo-photocatalysis coupling in BiFeO3–CeO2 heterojunction with off-site dual-active centers for ultrafast heterogeneous Fenton-like reactions.
Authors: Lin, Jierui1 (AUTHOR), Zheng, Yan1 (AUTHOR), Li, Zemin1 (AUTHOR), Tu, Shuchen1 (AUTHOR) shuchentu@m.scnu.edu.cn, Yan, Bo1 (AUTHOR)
Source: Applied Surface Science. Jul2026, Vol. 733, pN.PAG-N.PAG. 1p.
Subjects: Charge transfer, Heterogeneous catalysts, Catalytic domains, Haber-Weiss reaction, Catalysis, Organic compounds removal (Water purification), Hydroxyl group
Abstract: [Display omitted] • An off-site Ce-Fe dual-active center is constructed via a BiFeO 3 –CeO 2 heterojunction. • Piezo-photocatalysis synergy creates a "charge generation-transport" highway for catalysis. • Ultrafast pollutant degradation (>90% in 3 min) with high •OH yield (387.84 μmol g−1 h−1) is achieved. • The piezoelectric potential dynamically steers interfacial charge transfer via band bending. Efficient interfacial charge transfer is crucial for enhancing the kinetics of heterogeneous Fenton-like reactions. This study presents a dynamic modulation strategy for the off-site Ce-Fe dual-active centers (spatially separated Ce and Fe sites across the heterojunction interface) in BiFeO 3 –CeO 2 heterojunction via the piezo-photocatalysis, which facilitates the ultrafast hydrogen peroxide (H 2 O 2) activation. Under the synergistic piezo-photocatalytic condition, this system achieved over 90% degradation of sodium butyl xanthate (10 mg/L) within 3 min, with an apparent kinetic constant (0.43 min−1) three times higher than that of the Fenton-like process alone. Simultaneously, a remarkable hydroxyl radical (•OH) yield of 387.84μmol g−1 h−1 was attained, representing a 10-fold enhancement over the conventional system. In-situ piezoresponse force microscopy and electrochemical analyses reveal that the piezoelectric polarization couples with the built-in electric field, creating a potent directional field at the interface that drives the efficient charge migration. This process not only promotes H 2 O 2 reduction on the CeO 2 surface but also establishes a rapid valence cycle between Ce3+/Ce4+ and Fe2+/Fe3+. This work elucidates the mechanism of external-field-mediated electronic structure regulation at the heterojunction interface at the atomic/molecular level, providing a novel approach for designing high-performance catalytic systems through surface and interface engineering. [ABSTRACT FROM AUTHOR]
Copyright of Applied Surface Science is the property of Elsevier B.V. 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: 192665429
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PubType: Academic Journal
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  Data: Piezo-photocatalysis coupling in BiFeO3–CeO2 heterojunction with off-site dual-active centers for ultrafast heterogeneous Fenton-like reactions.
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  Data: <searchLink fieldCode="AR" term="%22Lin%2C+Jierui%22">Lin, Jierui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zheng%2C+Yan%22">Zheng, Yan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Zemin%22">Li, Zemin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tu%2C+Shuchen%22">Tu, Shuchen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> shuchentu@m.scnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Yan%2C+Bo%22">Yan, Bo</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Applied+Surface+Science%22">Applied Surface Science</searchLink>. Jul2026, Vol. 733, pN.PAG-N.PAG. 1p.
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  Data: [Display omitted] • An off-site Ce-Fe dual-active center is constructed via a BiFeO 3 –CeO 2 heterojunction. • Piezo-photocatalysis synergy creates a "charge generation-transport" highway for catalysis. • Ultrafast pollutant degradation (>90% in 3 min) with high •OH yield (387.84 μmol g−1 h−1) is achieved. • The piezoelectric potential dynamically steers interfacial charge transfer via band bending. Efficient interfacial charge transfer is crucial for enhancing the kinetics of heterogeneous Fenton-like reactions. This study presents a dynamic modulation strategy for the off-site Ce-Fe dual-active centers (spatially separated Ce and Fe sites across the heterojunction interface) in BiFeO 3 –CeO 2 heterojunction via the piezo-photocatalysis, which facilitates the ultrafast hydrogen peroxide (H 2 O 2) activation. Under the synergistic piezo-photocatalytic condition, this system achieved over 90% degradation of sodium butyl xanthate (10 mg/L) within 3 min, with an apparent kinetic constant (0.43 min−1) three times higher than that of the Fenton-like process alone. Simultaneously, a remarkable hydroxyl radical (•OH) yield of 387.84μmol g−1 h−1 was attained, representing a 10-fold enhancement over the conventional system. In-situ piezoresponse force microscopy and electrochemical analyses reveal that the piezoelectric polarization couples with the built-in electric field, creating a potent directional field at the interface that drives the efficient charge migration. This process not only promotes H 2 O 2 reduction on the CeO 2 surface but also establishes a rapid valence cycle between Ce3+/Ce4+ and Fe2+/Fe3+. This work elucidates the mechanism of external-field-mediated electronic structure regulation at the heterojunction interface at the atomic/molecular level, providing a novel approach for designing high-performance catalytic systems through surface and interface engineering. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Applied Surface Science is the property of Elsevier B.V. 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.apsusc.2026.166612
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Charge transfer
        Type: general
      – SubjectFull: Heterogeneous catalysts
        Type: general
      – SubjectFull: Catalytic domains
        Type: general
      – SubjectFull: Haber-Weiss reaction
        Type: general
      – SubjectFull: Catalysis
        Type: general
      – SubjectFull: Organic compounds removal (Water purification)
        Type: general
      – SubjectFull: Hydroxyl group
        Type: general
    Titles:
      – TitleFull: Piezo-photocatalysis coupling in BiFeO3–CeO2 heterojunction with off-site dual-active centers for ultrafast heterogeneous Fenton-like reactions.
        Type: main
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            NameFull: Lin, Jierui
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            NameFull: Zheng, Yan
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            NameFull: Li, Zemin
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            NameFull: Tu, Shuchen
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            NameFull: Yan, Bo
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          Dates:
            – D: 01
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
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              Value: 01694332
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              Value: 733
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            – TitleFull: Applied Surface Science
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