近年来水环境污染问题日渐突出,PPCPs作为一种新污染物备受全世界关注。布洛芬是PPCPs中的一种，会对人体带来潜在风险。本研究针对水体中的布洛芬不易降解的问题，将光催化技术与过硫酸盐高级氧化技术相结合，通过尿素和KOH 辅助热聚合的方法对g-C₃N₄进行改性，实现对g-C₃N₄厚度、结构内缺陷和孔洞的协同调控，制备出了富含氮缺陷的薄层多孔g-C₃N₄，实现了活性位点调控，比表面积增大，限域催化等功能，系统提升了氮化碳在光催化耦合过硫酸盐下的催化降解布洛芬效率。此外还探究了改性后的材料对布洛芬催化降解过程中起主要作用的活性自由基。

In recent years, the problem of water environmental pollution has become increasingly prominent, and PPCPs, as a new pollutant, have attracted worldwide attention. Ibuprofen is a type of PPCPs that poses potential risks to the human body. This study focuses on the problem of difficult degradation of ibuprofen in water. By combining photocatalytic technology with advanced oxidation technology of persulfate, g-C₃N₄ was modified through urea and KOH-assisted thermal polymerization to achieve synergistic regulation of g-C₃N₄ thickness, structural defects, and pores. A thin layer of porous g-C₃N₄ rich in nitrogen defects was prepared, to achieve the functions of active site regulation, increased specific surface area, and confined catalysis. The system improved the catalytic degradation efficiency of ibuprofen by carbon nitride under photocatalytically coupling with persulfate. In addition, the active free radicals that play a major role in the catalytic degradation process of ibuprofen by the modified material were investigated.