The combination of adsorption-photocatalysis and advanced oxidation processes (AOP) based on sulfate (SO₄^•−) for the treatment of organic pollution has the advantages of a high degradation rate, affordability, and an absence of secondary pollution. This study combined amphiphilic super-crosslinked porous cyclodextrin resin (PBCD-B-D), bismuth oxybromide (BiOBr), a composite material with dual functions of adsorption and photocatalysis, and AOP based on SO₄^•− for the treatment of Acid Orange 7 (AO7) in water. The combination of BiOBr/PBCD-B-D (BOP-24) with peroxymonosulfate (PMS) showed an optimal adsorption–photocatalytic effect. Compared to the 24% PBCD-B-D (BOP-24)/visible light system, the degradation efficiency of BOP-24/PMS system for AO7 is increased from 64.1% to 99.2% within shorter time (∼60 min). Moreover, the BOP-24/PMS system showed a wide range of pH application (pH = 3–11). The addition of Cl⁻, SO₄²⁻, and NO₃⁻ promoted the photodegradation of AO7, whereas the addition of CO₃²⁻ did not. The free radical capture experiments of the BOP-24/PMS AO7 degradation system showed that •O₂⁻, h⁺, •OH, and SO₄^•− are reactive species. The proposed BOP-24 system used adsorption and a unique cavity structure to enrich AO7 near the active site, thereby reducing the path for PMS activation. PMS also acted as an electron (e⁻) acceptor to promote the transfer of part of e⁻ to PMS, thereby further improving the efficiency of carrier separation. The proposed system is an effective method to improve the degradation of pollutants and broadens the range of application of SO₄^•−-based AOP technology.

基于硫酸盐(SO ₄ ^•- )的吸附-光催化和高级氧化工艺(AOP)相结合处理有机污染具有降解率高、经济实惠、无二次污染等优点。本研究将两亲超交联多孔环糊精树脂（PBCD-BD）、具有吸附和光催化双重功能的复合材料溴氧化铋（BiOBr）和基于SO _{4的AOP结合在一起}^•−用于处理水中的酸性橙 7 (AO7)。BiOBr/PBCD-BD (BOP-24) 与过氧单硫酸盐 (PMS) 的组合显示出最佳的吸附-光催化效果。与 24% PBCD-BD (BOP-24)/可见光系统相比，BOP-24/PMS 系统对 AO7 的降解效率在更短的时间内（~60 分钟）从 64.1% 提高到 99.2%。此外，BOP-24/PMS 系统显示出广泛的 pH 应用范围（pH = 3-11）。添加Cl ^-、SO ₄ ^2-和NO ₃ ^-促进了AO7的光降解，而添加CO ₃ ^2-则没有。BOP-24/PMS AO7降解体系的自由基捕获实验表明•O ₂ ^- , h ⁺、•OH 和SO ₄ ^•-是反应性物质。所提出的 BOP-24 系统使用吸附和独特的空腔结构来富集活性位点附近的 AO7，从而减少 PMS 激活的路径。PMS还作为电子（e- ^）受体促进部分e-向PMS的转移^，从而进一步提高载流子分离效率。该系统是改善污染物降解的有效方法，拓宽了基于SO ₄ ^•-的AOP技术的应用范围。