The presence of antibiotic residues in water bodies is an emerging global concern due to its potential development of antimicrobial resistance. Hence, it is essential to develop photocatalysts that not only degrade the antibiotics but can also simultaneously disinfect. Four different boron and cerium doped TiO₂ photocatalysts, synthesized by the EDTA-citrate method, are studied for the degradation of two common fluoroquinolone-based antibiotics: ciprofloxacin (CIP) and norfloxacin (NOR) under sunlight. The catalysts are characterized by SEM, TEM, Raman spectroscopy, XPS, DRS, BET surface area and particle size analyzer. At optimized conditions, the synthesized catalysts showed 90–93% degradation for both CIP and NOR. The effects of catalyst loading and initial concentration are studied, and the reaction is found to be pseudo-first-order. The degradation is analyzed by COD reduction and LC–MS, and the by-products of degradation determined. The recycle studies showed that the catalysts are stable up to three consecutive runs. The scavenging experiments indicated e^― and OH˙ as the dominant species responsible for the photocatalytic activity. The disinfection studies using these catalysts under solar light gave 95–99.99% efficiency for E.coli confirming that they are very efficient and can be further exploited for large scale treatment.

由于其潜在的抗药性发展，水体中抗生素残留的存在已成为全球关注的焦点。因此，开发不仅降解抗生素而且还可以同时消毒的光催化剂至关重要。四种不同的硼和铈掺杂的TiO ₂研究了通过柠檬酸乙二胺四乙酸（EDTA）柠檬酸合成的光催化剂对两种常见的氟喹诺酮类抗生素的降解：环丙沙星（CIP）和诺氟沙星（NOR）在阳光下的降解。通过SEM，TEM，拉曼光谱，XPS，DRS，BET表面积和粒度分析仪对催化剂进行表征。在最佳条件下，合成的催化剂对CIP和NOR均显示90-93％的降解。研究了催化剂负载量和初始浓度的影响，发现该反应为拟一级反应。通过减少COD和LC-MS分析降解，并确定降解的​​副产物。循环研究表明，该催化剂在三个连续运行中均保持稳定。清除实验表明e ^―OH +是负责光催化活性的主要物质。在阳光下使用这些催化剂进行的消毒研究表明，大肠杆菌的效率为95-99.99％，这证明它们非常有效，可以进一步用于大规模处理。