Xin Xiya, Liu Mei, Zhu Pengfei, Huang Zhaoxin, Lu Han
School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China.
Research Institute of Industrial Hazardous Waste Disposal and Resource Utilization, Southwest Petroleum University, Chengdu, Sichuan 610500, P. R. China.
Langmuir. 2024 Sep 17;40(37):19751-19765. doi: 10.1021/acs.langmuir.4c02487. Epub 2024 Aug 31.
In this study, a novel AgNbO/BiMoO/PANI double Z-scheme heterojunction photocatalyst was created via a solvothermal method, and the method investigates its photocatalytic degradation performance toward norfloxacin (NOR) and other antibiotics. When the content of AgNbO is 5 wt % and the content of PANI is 1 wt %, the rate of degradation of AgNbO/BiMoO/PANI on NOR under visible light is 95.56%, the rate of removal of total organic carbon is ∼57.45%, and its pseudo-first-order reaction rate constant is 0.01878 min, which surpasses those of AgNbO, BiMoO, and AgNbO/BiMoO by factors of 14.22, 2.46, and 1.35, respectively. At the same time, the AgNbO/BiMoO/PANI photocatalyst still showed good stability after three cycles. The results demonstrated that the augmented photocatalytic performance of AgNbO/BiMoO/PANI can be attributed to the formation of a double Z-scheme heterojunction and the incorporation of PANI with excellent conductivity, resulting in the higher efficiency of migration of charge carriers while retaining strong redox ability. This work affords a high-efficiency and environmentally friendly reference for the development of a BiMoO-based heterojunction photocatalyst and its application in the purification of antibiotics in water.
在本研究中，通过溶剂热法制备了一种新型的AgNbO/BiMoO/PANI双Z型异质结光催化剂，并研究了其对诺氟沙星（NOR）和其他抗生素的光催化降解性能。当AgNbO的含量为5 wt%且PANI的含量为1 wt%时，AgNbO/BiMoO/PANI在可见光下对NOR的降解率为95.56%，总有机碳的去除率约为57.45%，其准一级反应速率常数为0.01878 min⁻¹，分别是AgNbO、BiMoO和AgNbO/BiMoO的14.22倍、2.46倍和1.35倍。同时，AgNbO/BiMoO/PANI光催化剂在三个循环后仍表现出良好的稳定性。结果表明，AgNbO/BiMoO/PANI光催化性能的增强可归因于双Z型异质结的形成以及具有优异导电性的PANI的引入，从而在保持强氧化还原能力的同时提高了电荷载流子的迁移效率。这项工作为基于BiMoO的异质结光催化剂的开发及其在水中抗生素净化中的应用提供了一种高效且环保的参考。
