Here in this study, a novel ternary CuS/HKUST‒1/Ni(acac)₂ nano photocatalyst (CSHK‒Ni) was developed through a facile modification of HKUST‒1 MOF with Ni(acac)₂ metal complex and by immobilizing CuS into the metal-organic framework (MOF). The incorporation of CuS, a narrow bandgap semiconductor, is anticipated to allow easy excitation by visible-light and improve the photocatalytic potential of the formulated catalyst which is validated by the decrease in the bandgap energy from 3.10 eV of pristine MOF to 2.19 eV. Moreover, the anchoring of the metal complex improves the light harvesting behavior by increased conjugation. Photoluminescence studies provided evidence of the effective separation of the photoinduced charge-carriers, reducing the rate of recombination and enhancing the photocatalytic potential of the CSHK‒Ni nanocomposite. The engineered catalyst displayed remarkable efficiency in the degradation of nitroimidazole containing antibiotics, Tinidazole (TNZ) and Metronidazole (MTZ), via H₂O₂ assisted AOP achieving a maximum photocatalytic efficiency of 95.87 ± 1.64% and 97.95 ± 1.33% in just 30 min under irradiation of visible light at optimum reaction conditions. The possible degradation pathway was elucidated based on the identification of ROS and degradation intermediates via HR‒LCMS and quenching experiments. Meanwhile, the chemical oxygen demand (COD) and total organic carbon (TOC) removal were also examined, encompassing the discussing of various aspects including reaction conditions, influence of various oxidizing agents, competing species and dissolved organic substrates present in the wastewater, marking the novelty of the study. This research elucidated the role of the CSHK‒Ni nanocomposite as an interesting photocatalyst in the elimination of emerging nitroimidazole containing pharmaceutical pollutant under visible-light exposure, presenting an exciting novel avenue for a cleaner and greener environment in the days to come.

在这项研究中，通过用 Ni(acac) ₂金属配合物对 HKUST-1 MOF 进行简单修饰，并将 CuS 固定在其中，开发了一种新型三元 CuS/HKUST-1/Ni(acac) ₂纳米光催化剂 (CSHK-Ni)。金属有机框架（MOF）。 CuS（一种窄带隙半导体）的掺入预计可以轻松地被可见光激发，并提高配方催化剂的光催化潜力，这通过带隙能量从原始 MOF 的 3.10 eV 降低到 2.19 eV 得到了验证。此外，金属络合物的锚定通过增加共轭来改善光捕获行为。光致发光研究提供了有效分离光生电荷载流子、降低重组率并增强 CSHK-Ni 纳米复合材料的光催化潜力的证据。该工程催化剂通过H ₂ O ₂辅助AOP在降解含有硝基咪唑的抗生素、替硝唑(TNZ)和甲硝唑(MTZ)方面表现出卓越的效率，在短短30分钟内实现了最大光催化效率95.87 ± 1.64%和97.95 ± 1.33%在可见光照射下，在最佳反应条件下。通过 HR-LCMS 和猝灭实验对 ROS 和降解中间体进行鉴定，阐明了可能的降解途径。同时，还考察了化学需氧量（COD）和总有机碳（TOC）的去除，包括对反应条件、各种氧化剂的影响、废水中存在的竞争物种和溶解有机底物等各个方面的讨论，标志着研究的新颖性。 这项研究阐明了 CSHK-Ni 纳米复合材料作为一种有趣的光催化剂在可见光照射下消除新兴的含硝基咪唑药物污染物的作用，为未来创造更清洁、更绿色的环境提供了一条令人兴奋的新途径。