Interfacially enhanced visible-light photocatalysis for tetracycline degradation with Bi2Se3/g-C3N4 nanocomposite

IF 3.1 3区化学 Q3 CHEMISTRY, PHYSICAL

Chemical Physics Letters Pub Date : 2025-09-02 DOI:10.1016/j.cplett.2025.142399

Mingli Chen , Han Xu , Zhan Wang

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Abstract

Tetracycline (TC) contamination in water bodies poses a serious environmental and health risk, underscoring the need for effective remediation strategies. Herein, this work explores a novel approach to TC remediation using a 2D/2D Bi₂Se₃/g-C₃N₄ nanosheet nanocomposite as a visible-light-driven photocatalyst. The key innovation lies in the 2D/2D Bi₂Se₃/g-C₃N₄ heterostructure, designed to enhance charge separation and reactive oxygen species generation. Optimized nanocomposites (5 % Bi₂Se₃/g-C₃N₄) achieve 86.11 % TC degradation within 90 min, demonstrating substantially superior performance compared to g-C₃N₄ and Bi₂Se₃ components. Photoelectrochemical and photoluminescence analyses reveal that the enhanced activity stems from efficient interfacial charge transfer, minimizing electron-hole recombination. This study showcases that Bi₂Se₃/g-C₃N₄ nanocomposites offer a promising strategy for the photocatalytic removal of antibiotic pollutants from water.

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Bi2Se3/g-C3N4纳米复合材料界面增强可见光催化降解四环素的研究

水体中的四环素污染构成严重的环境和健康风险，强调需要有效的补救战略。本研究探索了一种利用2D/2D Bi2Se3/g-C3N4纳米片纳米复合材料作为可见光驱动光催化剂来修复TC的新方法。关键创新在于2D/2D Bi2Se3/g-C3N4异质结构，旨在增强电荷分离和活性氧的生成。优化后的纳米复合材料（5 % Bi2Se3/g-C3N4）在90 min内实现了86.11% %的TC降解，与g-C3N4和Bi2Se3组分相比，表现出显著的优异性能。光电化学和光致发光分析表明，活性增强源于有效的界面电荷转移，最大限度地减少了电子-空穴复合。该研究表明，Bi2Se3/g-C3N4纳米复合材料为光催化去除水中抗生素污染物提供了一种很有前途的策略。

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来源期刊

Chemical Physics Letters 化学-物理：原子、分子和化学物理

CiteScore

5.70

自引率

3.60%

发文量

798

审稿时长

33 days

期刊介绍： Chemical Physics Letters has an open access mirror journal, Chemical Physics Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Chemical Physics Letters publishes brief reports on molecules, interfaces, condensed phases, nanomaterials and nanostructures, polymers, biomolecular systems, and energy conversion and storage. Criteria for publication are quality, urgency and impact. Further, experimental results reported in the journal have direct relevance for theory, and theoretical developments or non-routine computations relate directly to experiment. Manuscripts must satisfy these criteria and should not be minor extensions of previous work.