Magnetic carbon nanotube modified S-scheme TiO2-x/g-C3N4/CNFe heterojunction coupled with peroxymonosulfate for effective visible-light-driven photodegradation via enhanced interfacial charge separation

Li, Zhiyang; Ai, Wei; Zhang, Yinghe; Zhang, Jianqiao; Liu, Wenjie; Zhong, Dan; Cai, Yixiao; Johansson, Erik M. J.; Boschloo, Gerrit; Jin, Wenbiao; Yang, Lei

doi:10.1016/j.seppur.2022.122897

Cited by 31 publications

(3 citation statements)

References 44 publications

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“…The charge transfer process in an S-scheme heterojunction is underlined by three pivotal factors: an intrinsic electric field, band bending, and electrostatic interactions [56,57]. Due to the RP's smaller work function and elevated Fermi level, when OP and RP come into contact, electrons spontaneously diffuse from RP to OP, establishing an electron depletion layer and an accumulation layer.…”

Section: Heterojunction Constructionmentioning

confidence: 99%

Photodegradation of microplastics through nanomaterials: Insights into photocatalysts modification and detailed mechanisms

Xiao,

TIAN,

et al. 2024

Preprint

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Microplastics (MPs) are a critical environmental issue, with impacts ranging from ecosystem contamination to health risks through bioaccumulation. This review addresses the inefficacy of traditional water treatments in removing MPs and proposes photodegradation, particularly via nanomaterial-enhanced photocatalysts, as a solution. Utilizing their unique properties like large surface area and tunable bandgap, nanomaterials significantly improve degradation efficiency. Different strategies for photocatalysts modification to improve photocatalytic performance are thoroughly summarized, with the particular emphasis on element doping and heterojunction construction. Furthermore, this review thoroughly summarizes the possible fundamental mechanisms driving photodegradation of microplastics facilitated by nanomaterials, with a focus on processes like free radical formation and singlet oxygen oxidation. By clearly elucidating these strategies and mechanisms, this review aims to provide valuable insights and inspire further progress in microplastic photodegradation.

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Section: Heterojunction Constructionmentioning

confidence: 99%

Photodegradation of microplastics through nanomaterials: Insights into photocatalysts modification and detailed mechanisms

Xiao,

TIAN,

et al. 2024

Preprint

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show abstract

“…The charge transfer process in an S-scheme heterojunction is underlined by three pivotal factors: an intrinsic electric field, band bending, and electrostatic interactions [ 73 , 74 ]. Due to RP’s smaller work function and elevated Fermi level, when OP and RP come into contact, electrons spontaneously diffuse from RP to OP, establishing an electron depletion layer and an accumulation layer.…”

Section: Enhancement Of Photocatalytic Efficiencymentioning

confidence: 99%

Photodegradation of Microplastics through Nanomaterials: Insights into Photocatalysts Modification and Detailed Mechanisms

Xiao,

Tian,

et al. 2024

Materials

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Microplastics (MPs) pose a profound environmental challenge, impacting ecosystems and human health through mechanisms such as bioaccumulation and ecosystem contamination. While traditional water treatment methods can partially remove microplastics, their limitations highlight the need for innovative green approaches like photodegradation to ensure more effective and sustainable removal. This review explores the potential of nanomaterial-enhanced photocatalysts in addressing this issue. Utilizing their unique properties like large surface area and tunable bandgap, nanomaterials significantly improve degradation efficiency. Different strategies for photocatalyst modification to improve photocatalytic performance are thoroughly summarized, with a particular emphasis on element doping and heterojunction construction. Furthermore, this review thoroughly summarizes the possible fundamental mechanisms driving the photodegradation of microplastics facilitated by nanomaterials, with a focus on processes like free radical formation and singlet oxygen oxidation. This review not only synthesizes critical findings from existing studies but also identifies gaps in the current research landscape, suggesting that further development of these photocatalytic techniques could lead to substantial advancements in environmental remediation practices. By delineating these novel approaches and their mechanisms, this work underscores the significant environmental implications and contributes to the ongoing development of sustainable solutions to mitigate microplastic pollution.

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“…Radical trapping experiment based on EPR is widely used to reveal the photocatalytic mechanism [101,102]. When the CB potential of the RS exceeds the reduction potential of O2 (E(O2/•O2 − ) = −0.33 V vs. NHE), the EPR technique can detect the •O2 − signal using 5, 5-dimethyl-1-pyrrolidine N-oxide (DMPO) as the spin trapper [103]. Similarly, when the VB potential of the OS falls below the oxidation potential of H2O (E(H2O/•OH) = 2.38 V vs. NHE), EPR can detect the DMPO-•OH signal [104].…”

Section: Epr Techniquementioning

confidence: 99%

A review on ZnO-based S-scheme heterojunction photocatalysts

Jiang,

Cheng,

Zhang

et al. 2023

Chinese Journal of Catalysis

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Magnetic carbon nanotube modified S-scheme TiO2-x/g-C3N4/CNFe heterojunction coupled with peroxymonosulfate for effective visible-light-driven photodegradation via enhanced interfacial charge separation

Cited by 31 publications

References 44 publications

Photodegradation of microplastics through nanomaterials: Insights into photocatalysts modification and detailed mechanisms

Photodegradation of microplastics through nanomaterials: Insights into photocatalysts modification and detailed mechanisms

Photodegradation of Microplastics through Nanomaterials: Insights into Photocatalysts Modification and Detailed Mechanisms

A review on ZnO-based S-scheme heterojunction photocatalysts

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