反应性炭膜电催化净化水中氟喹诺酮类抗生素的构效和调控机制

本课题针对传统电化学体系的传质局限，提出以纳米SnO2-Bi改性的多孔炭膜作为过滤性阳极，构建新型反应性炭膜电催化过滤体系（RECMF）。以典型的氟喹诺酮类抗生素（FQs）为处理对象，通过耦合SnO2-Bi炭膜电极的吸附、过滤和电化学氧化作用实现对FQs高效、快速降解。主要研究内容：①分析制备工艺参数对SnO2-Bi炭膜电极电催化活性和耐腐蚀性等电化学性能的影响规律，优化制备方法；②构建RECMF体系，探明SnO2-Bi炭膜电极孔结构和FQs处理效率之间的构-效关系，为高性能的RECMF孔结构设计奠定基础；③研究RECMF体系吸附、过滤和电催化协同降解FQs的机理并建立反应动力学模型，识别关键控制因子，提出调控FQs处理效率的方法，并评价RECMF体系的稳定性。研究结果将为炭膜电催化过滤技术在水体净化领域的应用提供理论依据。

This proposal is attempted to develop a SnO2-Bi doped carbon membrane filter anode, and applied to construct a novel Reactive Electrochemical Carbon Membrane Filter (RECMF), which could minimize the transfer limitation of the electrochemical reactor, and remove typical Fluroquinolones (FQs) by the synergetic effect of adsorption, filtration and electrochemical oxidation. This hybrid of technology is a new attempt to remove FQs fast with high efficiency. We attempt to prepare the carbon membrane from coal using MnCO3 as template to control pore structure and in-situ grow nano size bismuth-antimony oxidized layer on the surface of the carbon membrane, which is referred as SnO2/Bi - carbon membrane filter anode. The goal of this research is to investigate the change of electrochemical reactivity and anti-corrosion properties of the carbon membrane after growing SnO2/Bi layer; Besides, this research also aims to reveal the relationship between the anode pore structure (average pore size, porosity) and FQs mineralization efficiency in RECMF, so as to determine the optimal pore structure; Then the filter anode with optimal pore structure will be used to construct a RECMF system to remove FQs, the mechanism and kinetics of FQs degradation in RECMF system will be carefully studied to find out the key control factor of FQs degradation in RECMF; Finally, we will optimize the control factor in RECMF according to its energy efficiency in FQs degradation and evaluate its stability. The findings of this research will have important theoretical significance and application value for developing efficient RECMF with low cost for water purification.