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- W4308739003 endingPage "122555" @default.
- W4308739003 startingPage "122555" @default.
- W4308739003 abstract "• Magnetic bentonite coupling Bi nanoparticles and OVs constructed effective MB/BiOBr-Bi. • Multiroles of magnetic bentonite in BiOBr morphology and OVs generation were found. • MB/BiOBr-Bi exhibited excellent photocatalytic performance and stability. • The enhanced performance was attributed to synergistic effects of carrier, Bi NPs, OVs and {001} facet. The multiple roles of supporting carrier are always neglected especially in constructing superior photocatalyst. In this study, a multi-functional integrated magnetic bentonite/BiOBr-Bi (MB/BiOBr-Bi) was designed for effective antibiotic removal via a facile method using supporting carrier and loading Bi nanoparticles (Bi NPs). Magnetic bentonite (MB) as the photocatalyst carrier had the function of template-like agent, which could transform the original BiOBr morphology from piled sheets to hierarchical structures. Meantime, surface negative charge and abundant -OH groups of MB played vital roles in {001} facet expose and oxygen vacancies (OVs) generation of BiOBr. Based on this hierarchical structure, OVs at an appropriate concentration was in-situ uniformly formed on BiOBr through Bi reduction. The obtained MB/BiOBr-Bi exhibited good photocatalytic performance, excellent cycling stability and a significant decrease in antibiotic intermediate product toxicity, effectively degrading 92.4% of tetracycline (TC) in 80 min. The main photocatalytic degradation mechanisms of TC removal by MB/BiOBr-Bi were interpretated from four aspects: the defect level owing to OVs, the surface plasma resonance (SPR) effect of Bi NPs, the molding function of MB, and the exposure of {001} active facets. This work highlights the neglected role of chosen carrier and delves into effects of carrier, Bi NPs and OVs, which provides a new idea for effective catalyst design." @default.
- W4308739003 created "2022-11-15" @default.
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- W4308739003 date "2023-02-01" @default.
- W4308739003 modified "2023-10-02" @default.
- W4308739003 title "Multifunctional magnetic bentonite induced hierarchical BiOBr coupling Bi nanoparticles and oxygen vacancies for enhanced photocatalytic performance" @default.
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- W4308739003 doi "https://doi.org/10.1016/j.seppur.2022.122555" @default.
- W4308739003 hasPublicationYear "2023" @default.