Well-construction of Zn2SnO4/SnO2@ZIF-8 core–shell hetero-structure with efficient photocatalytic activity towards tetracycline under restricted space

doi:10.1016/j.cjche.2022.04.016

Abstract

Abstract: Nowadays, efficient removal of antibiotic (e.g. tetracycline, TC) from water bodies has been of great global concern. Hereby, a novel Zn₂SnO₄/SnO₂@ZIF-8 photo-catalyst was first synthesized by a facile self-assembly in-situ growth method. Zn₂SnO₄/SnO₂@ZIF-8 exhibits a remarkable photocatalytic activity towards TC under visible-light driven with a rapid rate constant of 1.5×10^-2 min^-1, and a removal efficiency of 81.2%, which is superior to some catalysts in the literature. Importantly, the photocatalytic activity of Zn₂SnO₄/SnO₂@ZIF-8 could still remain ~77% after the fifth cycle, indicating its good stability and reusability. The remarkable performances of adsorption and photocatalytic were attributed to associative effects of catalytic activity of Zn₂SnO₄/SnO₂ and the unique porous nanostructure and stability of ZIF-8. This work could aid the future design and preparation of novel MOFs composite catalysts for efficient elimination of antibiotics from water.

Key words: Degradation, Catalyst, Tetracycline, ZIF-8, Zn₂SnO₄/SnO₂, Adsorption

摘要： Nowadays, efficient removal of antibiotic (e.g. tetracycline, TC) from water bodies has been of great global concern. Hereby, a novel Zn₂SnO₄/SnO₂@ZIF-8 photo-catalyst was first synthesized by a facile self-assembly in-situ growth method. Zn₂SnO₄/SnO₂@ZIF-8 exhibits a remarkable photocatalytic activity towards TC under visible-light driven with a rapid rate constant of 1.5×10^-2 min^-1, and a removal efficiency of 81.2%, which is superior to some catalysts in the literature. Importantly, the photocatalytic activity of Zn₂SnO₄/SnO₂@ZIF-8 could still remain ~77% after the fifth cycle, indicating its good stability and reusability. The remarkable performances of adsorption and photocatalytic were attributed to associative effects of catalytic activity of Zn₂SnO₄/SnO₂ and the unique porous nanostructure and stability of ZIF-8. This work could aid the future design and preparation of novel MOFs composite catalysts for efficient elimination of antibiotics from water.

关键词: Degradation, Catalyst, Tetracycline, ZIF-8, Zn₂SnO₄/SnO₂, Adsorption

Jiafei Wu, Yuning Jin, Danping Wu, Xiaoying Yan, Na Ma, Wei Dai. Well-construction of Zn₂SnO₄/SnO₂@ZIF-8 core–shell hetero-structure with efficient photocatalytic activity towards tetracycline under restricted space[J]. Chinese Journal of Chemical Engineering, 2022, 52(12): 45-55.

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Well-construction of Zn₂SnO₄/SnO₂@ZIF-8 core–shell hetero-structure with efficient photocatalytic activity towards tetracycline under restricted space

Well-construction of Zn₂SnO₄/SnO₂@ZIF-8 core–shell hetero-structure with efficient photocatalytic activity towards tetracycline under restricted space

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