文献类型：期刊文献

英文题名：A bioinspired supramolecular catalyst for enhanced mass transfer and radical generation in efficient bisphenols degradation

作者：Yang, Jingyi[1,2];Chen, Xinyu[2];Liao, Hongping[1];Zhou, Yi[2,3];Zhou, Yanbo[1,2,3];Luo, Xubiao[1];Wang, Hualin[2,4]

机构：[1]Jinggangshan Univ, Sch Life Sci, Key Lab Jiangxi Prov Funct Biol & Pollut Control R, Jian 343009, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Environm Risk Assessment & Control Chem Pr, Minist Ecol & Environm, Shanghai 200237, Peoples R China;[3]State Key Lab Coal Liquificat Gasificat & Utilizat, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, Shanghai 200237, Peoples R China

年份：2026

卷号：389

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20260319935770);WOS:【SCI-EXPANDED(收录号:WOS:001675114800002)】；

基金：This work was supported by Jiangxi Provincial Natural Science Foundation (Grant no. 20253BAC280127) and the Key Laboratory of Jiangxi Province for Functional Biology and Pollution Control in Red Soil Regions (Grant no. 2023SSY02051) . The manuscript was written with contributions from all authors. All authors have approved the final version of the manuscript.

语种：英文

外文关键词：Bisphenol a; beta-Cyclodextrin; Peroxymonosulfate; Bimetallic catalyst

摘要：Advanced oxidation processes (AOPs) are a class of commonly used and efficient water treatment technologies. However, when applied to remove trace organic pollutants from actual wastewater, their efficiency is often hampered by limited active sites and low electron transfer efficiency. Inspired by the natural phenomenon of pitcher plants in rainforests trapping insects, we synthesized an iron-manganese bimetallic oxide catalyst modified with cyclodextrin cavities (CDMFO) via a co-precipitation method. Here, beta-cyclodextrin (beta-CD) enriched pollutants at active sites, while Fe/Mn redox synergy boosted reactive oxygen species generation. Electron paramagnetic resonance (EPR) analysis revealed that CDMFO/PMS generated a unique mixture of radicals (center dot OH, & sdot;O2- ) and non-radical species (1O2), with beta-CD altering the ROS conversion pathway compared to unmodified MFO. The CDMFO/PMS system completely degraded bisphenol A within 15 min, whose kinetic rate constant was 0.3601 min- 1, much higher than the unmodified system. The system exhibited wide pH adaptability (3-11), strong resistance to common anions and cations, and excellent reusability. Critically, catalyst deactivation-observed as a decline in efficiency after five cycles-was attributed to reversible polymer deposition, with activity fully restored via simple tetrahydrofuran washing, underscoring the catalyst's practical regenerability. Continuous-flow column experiments using actual industrial wastewater demonstrated stable BPA removal for over 12 h, confirming the system's potential for real-world water purification. This work provides a supramolecular enhancement strategy for designing highly efficient and stable catalysts for trace organic pollutant removal. Environmental Implication. The extensive use of BPA and its persistent exposure have been associated with various health-related concerns. We developed a beta-cyclodextrin-confined Fe/Mn catalyst (CDMFO) that enables complete BPA degradation within 15 min, accelerating kinetics by 30-fold. The system operates over a wide pH range (3-11) and maintains high efficiency in complex water matrices, offering a robust and practical solution for purifying BPAcontaminated wastewater.