In this study, a visible light-driven chlorite activation process, i.e., the combined ClO₂-photocatalysis process, was constructed to efficiently produce chlorine dioxide for the enhanced degradation of the sulfamethoxazole antibiotic from aqueous solutions. The superiority of the combined ClO₂-photocatalysis process compared to visible light photocatalytic system, and chlorine dioxide oxidation process was systematically investigated. The addition of chlorite in the BiOI-based visible light photocatalytic system achieved 100% removal of sulfamethoxazole within 30 min, surpassing both the photocatalytic system (16%) and chlorine dioxide oxidation process (70%). The degradation constant rate (k) was 0.0771 min⁻¹, which was 2.7 times and 51.4 times higher than the chlorine dioxide oxidation process and photocatalytic system, respectively. Water matrix conditions including pH, inorganic ions, and organic matter had little effect on the degradation efficiency of sulfamethoxazole in the combined ClO₂-photocatalysis process. Moreover, antibiotic-resistant bacteria can be effectively inactivated and the production of toxic chlorine-containing intermediates and disinfection byproducts is significantly inhibited. This combined ClO₂-photocatalysis process takes advantage of photogenerated radicals to activate chlorite to chlorine dioxide, which not only promotes electron-hole separation, but also exhibits high efficiency, durability, resistance to external environment disturbances, and environmental safety, making it a good candidate for the efficient, green, and sustainable treatment of pharmaceutical wastewater.

在这项研究中，构建了可见光驱动的亚氯酸盐活化过程，即组合的ClO ₂ -光催化过程，以有效地产生二氧化氯，以增强水溶液中磺胺甲恶唑抗生素的降解。系统研究了组合ClO ₂光催化工艺相对于可见光光催化体系和二氧化氯氧化工艺的优越性。在基于 BiOI 的可见光光催化系统中添加亚氯酸盐可在 30 分钟内实现 100% 的磺胺甲恶唑去除，超过光催化系统 (16%) 和二氧化氯氧化过程 (70%)。降解常数速率（k）为0.0771 min ^-1，分别是二氧化氯氧化工艺和光催化系统的2.7倍和51.4倍。包括pH、无机离子和有机物在内的水基质条件对磺胺甲恶唑在联合ClO ₂光催化过程中的降解效率影响不大。此外，可有效灭活耐药菌，显着抑制有毒含氯中间体和消毒副产物的产生。这结合了 ClO ₂-光催化过程利用光生自由基将亚氯酸盐活化为二氧化氯，不仅促进电子-空穴分离，而且具有高效、耐用、抗外界环境干扰和环境安全等优点，是高效、高效、环保的理想选择。 、绿色、可持续的制药废水处理。