新型有机/无机杂化介孔材料在环境有毒污染物分析中的应用研究

Organic-inorganic hybrid mesoporous silicas with different organic functionalities would be synthesized by the one-step co-condensation under microwave hydrothermal conditions. Silver and oxidationzinc Nanoparticles doped with novel inorganic/organic functionalized mesoporous materials would be prepared by the liquid growth and electrochemical reduction deposition in this project. A feasibility of the resultant organic-inorganic hybrid mesoporous used as solid-phase microextraction fiber coatings coupled to HPLC for the extraction of trace phthalate esters from environmental aqueous solutions would be investigated.And also the activity of electrodes modified by silver and oxidationzinc nanoparticles doped with the organic-inorganic functionalized mesoporous materials for the electrocatalytic reduction of trace nitro-aromatic pollutants in the environmental samples would be analyzed.Based on the above,the aim of this research is to develop a simple and effective technique employed the obtained hybrid mesoporous sillicas as SPME fiber coatings and as materials of modified electrodes for the detection of environmental toxic pollutants,which will be a good guide to determin various analytes from different environmental samples and have a good application prospects in the related field of research.

本项目拟采用微波水热合成方法，通过共聚将有机基团引入介孔材料的骨架及孔道内，制备有机/无机杂化介孔材料；借助液相生长、电还原沉积法制备氧化锌、银纳米掺杂的新型有机/无机功能化介孔材料。将得到的功能化介孔材料作为固相微萃取涂层与高效液相色谱联用对环境样品中超微量邻苯二甲酸酯类增塑剂进行分析测定；以新型纳米掺杂无机/有机功能化介孔材料修饰电极对环境样品中超微量硝基芳香污染物进行电催化还原分析，从而建立功能化介孔材料及其修饰电极对邻苯二甲酸酯类及硝基芳香类环境有毒污染物的检测新技术与新方法，这在环境有毒污染物的分析检测应用中具有一定的意义和应用前景。

本项目主要以发展简易的微波水热制备功能化介孔纳米材料为基础，通过共聚、嫁接等方法将有机功能基团引入到介孔材料的骨架和孔道内，以制备功能化有机改性介孔复合材料。重点研究了功能化介孔复合材料对邻苯二甲酸酯类、多环芳烃及硝基芳香等环境有毒污染物的吸附、萃取行为，建立了功能化介孔材料及其修饰电极对邻苯二甲酸酯类、多环芳烃及硝基芳香等环境有毒污染物的主客体识别机制和电化学传感模型，并发展了基于固相微萃取（SPME）—高效液相色谱（HPLC）联用技术对环境样品中的多环芳烃及邻苯二甲酸酯类进行超微量分离检测的新技术和新方法，进一步推动了介孔材料在环境有毒污染物分析中的应用。