In order to solve problems of the photo-generated charge recombination and low utilization efficiency of visible light in achieving green and sustainable development, a novel flower-like Z-type heterojunction CuS/Bi₇O₉I₃ composite catalyst was successfully prepared through a facile and mild process. The preparatory conditions of Bi₇O₉I₃ and CuS are low temperature and normal pressure with environment friendly reagents. The degradation performance of the catalyst was evaluated using ciprofloxacin (CIP) antibiotic. The results showed that degradation rate of the CuS/Bi₇O₉I₃ composite catalyst was 5 and 4 times that of the single CuS and Bi₇O₉I₃ catalysts, respectively. The actual performance of the catalyst was evaluated using simulated wastewater containing different ions and real water sources. Results showed that the new CuS/Bi₇O₉I₃ composite catalyst has excellent degradation and practical performances. At the same time, there is a synergistic effect between the photothermal and catalytic effects of the catalyst. The rapid temperature increase obviously inhibited the biological activity of bacteria, thereby affecting its metabolism and enhancing the destruction of the composite catalyst. Finally, using the free radical capture, VB-XPS and ESR measurements, photocatalytic mechanisms are proposed.

中文翻译：

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在温和条件下制备的新型花状Z型异质结CuS / Bi7O9I3复合催化剂，用于降解抗生素和在可见光下杀菌

为解决光生电荷复合和可见光利用效率低的问题，以实现绿色可持续发展，成功地制备了一种新型花状Z型异质结CuS / Bi ₇ O ₉ I ₃复合催化剂。简单而温和的过程。Bi ₇ O ₉ I ₃和CuS的制备条件是在低温和常压下使用环境友好的试剂。使用环丙沙星（CIP）抗生素评估了催化剂的降解性能。结果表明，CuS / Bi ₇ O ₉ I _3的降解速率复合催化剂分别是单一CuS和Bi ₇ O ₉ I ₃催化剂的5倍和4倍。使用包含不同离子和真实水源的模拟废水评估了催化剂的实际性能。结果表明，新型CuS / Bi ₇ O ₉ I ₃复合催化剂具有优异的降解性能和实用性能。同时，在催化剂的光热作用和催化作用之间存在协同作用。温度的快速升高明显抑制了细菌的生物活性，从而影响了细菌的代谢并增强了复合催化剂的破坏作用。最后，利用自由基捕获，VB-XPS和ESR测量，提出了光催化机理。