Construction of Z-scheme Fe3O4/BiOBr/BiOI heterojunction with magnetically recyclable for enhanced photocatalytic reaction activity

Zhang, Jianxu; Dang, Jingjing; Guan, Weisheng

doi:10.1016/j.cherd.2024.08.043

Chemical Engineering Research and Design

2024

DOI: 10.1016/j.cherd.2024.08.043

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Construction of Z-scheme Fe3O4/BiOBr/BiOI heterojunction with magnetically recyclable for enhanced photocatalytic reaction activity

Jianxu Zhang,

Jingjing Dang,

Weisheng Guan

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2024

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Construction of Z-Scheme ZIF67/NiMoO4 Heterojunction for Enhanced Photocatalytic Degradation of Antibiotic Pollutants

Sasikumar,

Rajamanikandan,

2024

Materials

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The rational design of heterojunction photocatalysts enabling fast transportation and efficient separation of photoexcited charge carriers is the key element in visible light-driven photocatalyst systems. Herein, we develop a unique Z-scheme heterojunction consisting of NiMoO4 microflowers (NMOF) and ZIF67, referred to as ZINM (composite), for the purpose of antibiotic degradation. ZIF67 was produced by a solution process, whereas NMOF was synthesized via coprecipitation with a glycine surfactant. The NMOF exhibited a monoclinic phase with a highly oriented, interconnected sheet-like morphology. The ZINM showed better optical and charge transfer characteristics than its constituents, ZIF67 and NiMoO4. Consequently, the developed heterojunction photocatalysts exhibited superior photocatalytic redox capability; the ZINM30 (the composite with 30 wt.% of NiMoO4 loaded) could degrade 91.67% of tetracycline and 86.23% of norfloxacin within 120 min. This enhanced photocatalytic activity was attributable to the reduced bandgap (Egap = 2.01 eV), unique morphology, high specific surface area (1099.89 m2/g), and intimate contact between ZIF67 and NiMoO4, which facilitated the establishment of the Z-scheme heterojunction. Active species trapping tests verified that •O2− and h+ were the primary species, supporting the proposed degradation mechanism. This work highlights a valid Z-scheme ZIF67/NiMoO4 heterojunction system for efficient carrier separation and, therefore, enhanced photocatalytic degradation of antibiotics.

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Construction of Z-Scheme ZIF67/NiMoO4 Heterojunction for Enhanced Photocatalytic Degradation of Antibiotic Pollutants

Sasikumar,

Rajamanikandan,

2024

Materials

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Construction of Z-scheme Fe3O4/BiOBr/BiOI heterojunction with magnetically recyclable for enhanced photocatalytic reaction activity

Cited by 1 publication

References 56 publications

Construction of Z-Scheme ZIF67/NiMoO4 Heterojunction for Enhanced Photocatalytic Degradation of Antibiotic Pollutants

Construction of Z-Scheme ZIF67/NiMoO4 Heterojunction for Enhanced Photocatalytic Degradation of Antibiotic Pollutants

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