Photocatalysis provides a green strategy to eliminate the emerging pollutants of antibiotics. However, it remains challenging to design robust photocatalyst to fulfil the requirement of industrial implementation. Herein, a novel Z-scheme covalent triazine-based framework (CTF)-Bi₂WO₆ heterojunction photocatalyst was rationally fabricated by interfacial engineering of layered CTF-1 into flower-like Bi₂WO₆ for photocatalytic removal of antibiotic, using tetracycline (TC) as a representative. The structural, physicochemical, and electrochemical capabilities of the as-prepared photocatalyst were explored in detail by a range of advanced analyses. The results showed that the optimized CTF-Bi₂WO₆ exhibited superior photocatalytic performance, affording a TC removal efficacy of 77.14 % within 60 min, which was approximately 18 times and 2.67 times that of individual CTF-1 and Bi₂WO₆, respectively. The boosting property could be attributed to the Z-scheme heterostructure, which significantly reinforced the transfer and separation of photoinduced carriers. Meanwhile, the dominate reactive species participating in the degradation process were probed as O₂⁻ and h⁺ based on scavenger experiments and ESR analyses. Finally, the degradation pathway of TC by CTF-Bi₂WO₆ was proposed based on intermediate products, and the toxicity of TC and its degradation products were estimated by the toxicity estimation software tool (T.E.S.T.). This study showcases a feasible pathway towards designing CTF-based Z-scheme heterojunction photocatalysts for effective and eco-friendly antibiotic wastewater treatment.

光催化为消除新出现的抗生素污染物提供了一种绿色策略。然而，设计稳健的光催化剂以满足工业实施的要求仍然具有挑战性。在此，利用四环素将层状CTF-1界面工程化为花状Bi ₂ WO ₆ ，合理制备了一种新型Z型共价三嗪基骨架（CTF）-Bi ₂ WO ₆异质结光催化剂（ TC) 作为代表。通过一系列高级分析详细探讨了所制备的光催化剂的结构、物理化学和电化学能力。结果表明，优化后的CTF-Bi ₂ WO ₆表现出优异的光催化性能，在60分钟内提供77.14%的TC去除效率，分别是单独CTF-1和Bi ₂ WO ₆的18倍和2.67倍。增强特性可归因于 Z 型异质结构，它显着增强了光致载流子的转移和分离。同时，基于清除剂实验和ESR分析，参与降解过程的主要活性物质被探测为O ₂ ^-和h ^{+ 。}_{最后，CTF-Bi 2} WO ₆降解TC的途径以中间产物为基础提出，并通过毒性估计软件工具（TEST）估计TC及其降解产物的毒性。本研究展示了设计基于 CTF 的 Z 型异质结光催化剂用于有效和环保的抗生素废水处理的可行途径。