治理水中环境内分泌干扰物的仿生分子印迹光催化剂的制备及其性质研究

项目名称： 治理水中环境内分泌干扰物的仿生分子印迹光催化剂的制备及其性质研究

项目编号： No.21261026

项目类型： 地区科学基金项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 蒋峰芝

作者单位： 云南大学

项目金额： 50万元

中文摘要： 环境中高毒性低浓度的环境内分泌干扰物（EDCs）对人类健康和生态环境带来极大危害，已成为环境治理的热点和难点。分子印迹光催化剂是近期发展的一种高选择性催化降解EDCs的材料,其普遍采用TiO2与表面有机印迹聚合物层结合而得到，但有机印迹聚合物层易于被光催化产生的羟基自由基氧化而使材料的稳定性不高，使用寿命不长。本研究将仿生制备全无机型分子印迹TiO2光催化材料，使其对EDCs的光催化降解具有高选择性，且材料具有高稳定性。拟采用生物模板法，结合分子印迹技术及金属掺杂，制备出性能优越的全无机型多孔印迹二氧化钛选择性光催化剂，并将其应用于治理环境内分泌干扰物的模拟污染体系中，考察其化学组成及微观结构与选择性光催化降解性能之间的关系，重点研究和总结具有普适性的全无机型分子印迹光催化剂的设计和制备规律，探明其对EDCs选择性光催化降解的机理，具有重要的理论价值和应用前景。

中文关键词： 光催化剂；无机分子印迹技术；生物模板；环境内分泌干扰物；二氧化钛

英文摘要： The bad effects of Endocrine Disrupting Chemicals (EDCs) to human health and environment are concerned by the whole society. How to remove EDCs, which is in low concentration and with high toxicity, from environment especially from water has become a hotpot and difficulty in environmental management. Recently, molecular imprinted photocatalysts, which can degrade EDCs with high selectivity, have received extensive attention. To obtain the molecular imprinted photocatalysts, the surface of TiO2 was usually coated with organic molecular imprinted polymers (MIP). Under a long period of UV-light illumination, these organic polymers can be oxidized easily by photo-generated reactive OH? radicals and may cause the instability of the materials. In this project, a bionic inorganic molecular imprinted TiO2 phoyocatalyst, which is of high stability and selectivity for photocatalytic degradation of trace EDCs, will be developed. The porous TiO2 phoyocatalyst will be prepared with biological template and inorganic molecular imprinting technique. Meanwhile, transition metals which have strong interaction with EDCs molecules will be doped into the TiO2 photocatalyst. The transition metals will help to broaden the absorbance spectrum range of the photocalyst as well as to develop synergistic selectivity effect on EDCs molecule

英文关键词： Photocatalyst；Inorganic Molecular Imprinting Technique；Biology Template；Endocrine Disrupting Chemicals；TiO2