Construction of Super-Small-Sized BiVO4@SiO2 Composites with High Photocatalytic Performance for Tetracycline Degradation

IF 4.5 3区化学 Q2 CHEMISTRY, PHYSICAL

Catalysts Pub Date : 2026-01-05 DOI:10.3390/catal16010063

Lirui Xing, Zejie Zhang, Yuehong Zhang, Lei Ji

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引用次数: 0

Abstract

The ubiquitous presence of tetracycline in water sources due to its prevalent usage in antibiotics poses a potential risk to ecosystems and to human health. There is therefore a dire need for efficient methods of tetracycline removal. To this end, we constructed a series of super-small-sized BiVO4 composites with different loading amounts of 5 wt%, 10 wt%, 15 wt%, 20 wt%, and 25 wt% on SiO2 support by a hydrothermal–calcination method for efficient photocatalytic degradation of tetracycline. XRD and SEM results revealed that these composites all exhibited good crystallinity and well-dispersed morphologies. Particularly, the 20 wt% BiVO4@SiO2 of this series of composites showed superior photocatalytic performance, with 84.1% efficiency in tetracycline degradation, higher than any of its counterparts. This can be explained by its wide light-absorption range and high charge-separation efficiency, as confirmed by UV-Vis absorption spectra and quenched fluorescence spectra. This work offers a new method for the design and construction of tetracycline degradation photocatalysts.

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超小尺寸高光催化降解四环素BiVO4@SiO2复合材料的构建

由于四环素在抗生素中的普遍使用，四环素在水源中普遍存在，对生态系统和人类健康构成潜在风险。因此，迫切需要有效的四环素去除方法。为此，我们采用水热煅烧法在SiO2载体上构建了5 wt%、10 wt%、15 wt%、20 wt%和25 wt%的超小型BiVO4复合材料，用于高效光催化降解四环素。XRD和SEM结果表明，复合材料具有良好的结晶度和良好的分散形貌。特别是，该系列复合材料的20% wt% BiVO4@SiO2表现出优异的光催化性能，对四环素的降解效率为84.1%，高于任何同类材料。紫外-可见吸收光谱和猝灭荧光光谱证实了其较宽的光吸收范围和较高的电荷分离效率。本研究为四环素降解光催化剂的设计和构建提供了一种新的方法。

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来源期刊

Catalysts CHEMISTRY, PHYSICAL-

CiteScore

6.80

自引率

7.70%

发文量

1330

审稿时长

3 months

期刊介绍： Catalysts (ISSN 2073-4344) is an international open access journal of catalysts and catalyzed reactions. Catalysts publishes reviews, regular research papers (articles) and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.