具有吸附-光催化协同功能的多维度LDHs基微纳复合结构的生物模板导向合成

以催化剂活性组分的高分散、吸附与光催化协同作用为切入点，巧妙利用天然模板生物活性基团的诱导效应及限域效应，采用绿色生物模板法合成技术，将LDHs的层间离子可调控性、生物质分级多孔碳的吸附性、ZnFe2O4的磁性及可见光催化活性有机结合在一起，在介观尺度上进行多维度微纳结构单元的有序组装，将天然生物中精妙的多层次结构复制到目标材料中，合成具有吸附光催化协同性、光催化活性组元高分散、可见光响应的三维MgInAl-LDH/C/ZnFe2O4磁性微纳复合结构催化材料。结构中纳米尺度的MgInAl-LDH片层以边-面结合方式，与ZnFe2O4磁性纳米棒均匀穿插生长在微米生物质多孔碳上，使纳米结构单元的催化特性展现出优越的结构整体效应。采用实验技术和理论计算相结合的手段，系统研究组装体结构与性能之间的构效关系，阐明合成及吸附催化机理，为新型吸附催化材料的合成开辟新途径。

To obtain high dispersion of active groups and synergistic effect of adsorption and photocatalysis, muti-dimensional micro/nanostructures containing LDHs nanosheets with high interlayer adjustability, ZnFe2O4 magnetic nanoparticles with visible light photocatalytic activity, and hierarchically porous carbon fiber with high adsorption performance are assembled on the mesoscopic scale by using biomass as template，which serve as both morphology inducer and space blocker. The as-synthesized MgInAl-LDH/C/ZnFe2O4 duplicates the hierarchically porous structure of biomass, in which MgInAl-LDH nanosheets stack in edge-face mode and overlap with magnetic ZnFe2O4 nanorods, with both of them distributing uniformly on the surface of porous carbon, and thus have synergistic adsorption-photocatalytic activities, and visible light response due to the micro/nanostructural effect. The impact of processing conditions on the microstructure, and the interaction between structures and properties will be investigated systematically based on the combination of theoretic calculation and experimental technology. This project will provide a new route for the development novel functional materials for environment treatment.