M-N-C单原子活化过硫酸盐高效定向转化水中磺胺类抗生素的研究

磺胺类抗生素的滥用及排放造成了水体中抗生素的污染日益严重，其内在生物毒性及抗性基因的存在，对生态系统和人类健康造成了严重威胁。开发安全、高效、可持续的SAs转化和去除新方法，是水污染控制领域的一个迫切需求。针对吸附法吸附材料难再生及高级氧化技术氧化剂利用效率低等瓶颈问题，本项目以构建吸附-过硫酸盐氧化反应体系为目标，高效定向去除水中SAs。通过研制吸附与催化活性位点匹配的M-N-C单原子催化剂，从原子尺度和表界面层次研究SAs吸附和同步定向转化的反应机理与调控机制，探索吸附与催化活性位点的匹配机制与增效途径；全面解析吸附-过硫酸盐氧化的协同反应体系对SAs的去除机理，以期推动单原子催化过硫酸盐技术在污染控制领域的发展，并为抗生素废水处理提供理论和技术参考。

The abuse and discharge of sulfonamides antibiotics (SAs) have resulted in the increasingly serious water pollution of antibiotics, and the existence of their inherent biological toxicity and resistance genes has posed a serious threat to the ecosystem and human health. The development of safe, efficient and sustainable new methods for SAs conversion and removal is an urgent need in the field of water pollution control. In view of the bottleneck problems of difficult regeneration of adsorbent materials by adsorption method and low oxidant utilization efficiency of advanced oxidation technology, this project aims to construct adsorption-persulfate oxidation system, which could efficiently and directionally converse SAs from water. By developing the M-N-C single-atom catalyst with the adsorption and catalytic active sites, the reaction mechanism and regulation mechanism of the adsorption and synchronous directional conversion of SAs will be studied from the atomic scale and surface interface level. It also will explore the matching mechanism and synergistic pathway of the adsorption and catalytic active sites. Besides, the removal mechanism of SAs by the synergistic reaction system of adsorption-persulfate oxidation will be comprehensively analyzed, which would promote the development of single-atom catalyzed persulfate technology in the field of pollution control, and to provide theoretical and technical reference for antibiotic wastewater treatment,