Constructing Bi2WO6 with Abundant Crystal Defects for High-Efficiency Photocatalytic Degradation of Tetracycline

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2025-06-25 DOI:10.1007/s10562-025-05042-4

Lan Zhang, Zhipeng Zou, Na Li, Cong Tan, Baofei Hao, Huizhong Ma

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Abstract

The residual antibiotics in the water environment pose a great threat to the ecological environment and human life safety. However, an effective and environmentally friendly method for degrading antibiotics is still lacking. Herein, a novel Bi₂WO₆ catalyst with optimized morphology and abundant crystal defects was designed to remove tetracycline. The experimental results showed that the generation of grain boundaries and dislocations were induced through the epitaxial growth method, which endowed Bi₂WO₆ with rapid separation and transfer of photoinduced electrons. Moreover, the specific surface area and light adsorption capacity of optimized catalyst (0.5Bi-Bi) were significantly improved. As a result, 0.5Bi-Bi exhibited the excellent photocatalytic performance, which degraded 90.78% of TC within 40 min under visible light illumination. Meanwhile, the synthesized 0.5Bi–Bi catalyst has robust photocatalytic stability and sustainability. The capture experiment proved that ⋅O₂⁻ was the prime active substance, and a possible mechanism of photodegradation of TC was proposed.

Graphical Abstract

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构建晶体缺陷丰富的Bi2WO6高效光催化降解四环素

水环境中抗生素残留对生态环境和人类生命安全构成极大威胁。然而，目前仍缺乏一种有效且环保的降解抗生素的方法。本文设计了一种具有优化形貌和丰富晶体缺陷的新型Bi2WO6催化剂，用于脱除四环素。实验结果表明，通过外延生长方法可以诱导晶界和位错的产生，使Bi2WO6具有快速分离和光致电子转移的特性。优化后的催化剂（0.5Bi-Bi）比表面积和光吸附能力均有显著提高。结果表明，0.5Bi-Bi表现出优异的光催化性能，在可见光照射下40 min内降解了90.78%的TC。同时，合成的0.5Bi-Bi催化剂具有较强的光催化稳定性和可持续性。捕集实验证明，⋅O2−是主要活性物质，并提出了TC光降解的可能机理。图形抽象

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.