多级调控自组装MXene静电纺丝复合薄膜及高效污水净化机理研究

Electrospun composite films materials, as new type self-assembled materials, exhibit many novel and excellent performances and unique nanostructures, which become the research focus of scientists at different countries in recent years. MXene materials belong to two-dimensional transition metal carbides or carbonitride, show high specific surface area, high conductivity, adjustable components, controllable minimum layer, demonstrating great potential in areas of energy storage, adsorption, sensors, and conductive filler. The present project is aimed to prepare some self-assembled MXene-based electrospun composite films as novel separating membrane, to explore the contribution and influence of variety of factors in orderly assembly process, and to reveal the relationships between structure and nature of the assembly unit, micro/nanostructures and sewage purification performances. At the same time, present researches focus on the self-assembly process of the composite film materials as separating membrane and properties/mechanisms of sewage purification in some heavy metal ions and organic dyes systems due to the intrinsic adsorption and catalytic properties, high water flux and high selectivity, adjustable mechanical properties and environmental responsiveness. And sensitive and efficient high-selective drugs of new separating membrane are proposed to build. Present project would broaden the research fields of MXene composite materials and electrospun composite films, construct novel MXene-based electrospun composite films, showing important significance and applications in the fields of the colloid chemistry, functional materials, and environmental engineering.

静电纺丝复合薄膜材料由其具有独特结构和性能成为近年研究热点。MXene为二维过渡金属碳/氮化物，具有高比表面积、高电导率、组分灵活可调，最小层厚可控等特点，在储能、吸附、传感器、催化等领域展现出巨大潜力。本项目拟制备若干作为新型分离膜的自组装MXene静电纺丝复合薄膜材料，探索多种因素在有序组装过程中的调控和影响，揭示多级组装单元结构自组装机理与复合组装材料污水净化性能之间的规律。利用复合薄膜的特有吸附催化性能、高水通量与高选择性、可调机械力学性能以及环境响应性等特点，系统研究复合膜材料对污水中重金属离子、有机染料等去除性能、稳定性、选择性及作用机理研究，归纳总结其中的基本规律和机制，建立相关理论模型。本课题将拓展MXene复合材料与自组装薄膜的研究领域，构建基于MXene的新型静电纺丝复合薄膜，对胶体化学、功能材料、环境工程等领域相关研究工作具有重要科学意义和应用价值。

MXene为二维过渡金属碳/氮化物，具有高比表面积、高电导率、组分灵活可调，最小层厚可控等特点，在储能、吸附、传感器、催化等领域展现出巨大潜力。静电纺丝复合薄膜材料由其具有独特结构和性能成为近年研究热点。我们严格按照研究计划开展研究工作，研究若干自组装MXene静电纺丝复合薄膜材料、复合水凝胶、组装体的多层次有序组装与调控，构建功能有序组装体，重点研究以二维过渡金属碳化物MXene为载体，围绕MXene基纳米复合材料的制备、表征以及光催化性能研究开展工作，利用自组装策略，将多种金属纳米颗粒/金属硫化物/氧化物与MXene相复合，设计并构建了多种具有高活性、稳定性MXene基复合光催化剂。通过对这一系列结构新颖、性能优异的MXene基复合催化剂的光催化性能的研究，不仅为MXene材料用于催化反应提供了技术基础，也为新型光催化剂的设计与制备提供重要的理论依据，从而为化学、生化工程、医药、材料等领域相关研究工作提供重要的理论基础和技术支持。围绕以上研究内容，本课题研究期间共发表SCI收录论文120余篇，出版学术专著4章节，获多项各类学术奖励，授权发明专利3项，积极参加相关学术会议交流，培养毕业博士生、硕士生30余人，顺利完成预定研究计划和目标。