Photocatalysis is an efficacious technology for pollutants degradation; however, there remains ample room for the improvement of its degradation efficiency. Herein, a system involving a g-C₃N₄/BiOCOOH photocatalyst coupled with peroxymonosulfate (PMS) was developed, using Malachite green (MG), Rhodamine B (RhB), ciprofloxacin hydrochloride (CIP), and levofloxacin hydrochloride (LVF) as target pollutants. The prepared g-C₃N₄/BiOCOOH nanocomposites were systematically characterized. In contrast to pure g-C₃N₄ or BiOCOOH, the photocatalytic activities of the nanocomposites were enhanced due to the formation of g-C₃N₄/BiOCOOH heterojunctions, extensive specific surface areas, and more efficient charge separation. The degradation of RhB, MG, CIP, and LVF was further improved in this g-C₃N₄/BiOCOOH/PMS system due to the synergistic effects between the photocatalysts and PMS (the degradation of MG in the photocatalyst/PMS system was four fold that of a single photocatalyst system). An exploration of these synergetic mechanisms indicated that ·O^2- and ¹O₂ were the most significant reactive oxygen species in the single photocatalysis system, whereas in the photocatalyst/PMS system, additional ¹O₂ was generated due to the addition of PMS, and became the dominant species. This research suggests that the combination of photocatalysts and PMS is a feasible strategy for improving the pollutant removal activities of photocatalysts, which have strong potential for myriad applications in environmental remediation.

光催化是一种有效的污染物降解技术。然而，仍有足够的空间来提高其降解效率。在本文中，开发了一种包含gC ₃ N ₄ / BiOCOOH光催化剂与过氧一硫酸盐（PMS）偶联的系统，使用孔雀石绿（MG），若丹明B（RhB），盐酸环丙沙​​星（CIP）和盐酸左氧氟沙星（LVF）作为目标污染物。系统地表征了制备的gC ₃ N ₄ / BiOCOOH纳米复合材料。与纯gC ₃ N ₄或BiOCOOH相比，由于形成了gC ₃ N ₄而增强了纳米复合材料的光催化活性。/ BiOCOOH异质结，广泛的比表面积和更有效的电荷分离。在该gC ₃ N ₄ / BiOCOOH / PMS系统中，由于光催化剂与PMS之间的协同作用，RhB，MG，CIP和LVF的降解得到了进一步改善（光催化剂/ PMS系统中MG的降解是其的四倍）。单一光催化剂系统）。对这些协同机制的探索表明，· O ²和¹ O ₂是单一光催化系统中最重要的活性氧，而在光催化剂/ PMS系统中，另外¹ O ₂由于添加了PMS而产生了碳，并成为优势种。这项研究表明，光催化剂和PMS的组合是提高光催化剂污染物去除活性的可行策略，在环境修复中有广泛的应用潜力。