三维有序大孔石墨烯/TiO2@共轭聚合物三元光催化膜的制备及光催化和力学性能研究

项目名称： 三维有序大孔石墨烯/TiO2@共轭聚合物三元光催化膜的制备及光催化和力学性能研究

项目编号： No.21501129

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 栾云博

作者单位： 太原理工大学

项目金额： 20万元

中文摘要： 日益严重的水体污染使得研发高效且具有广泛实用性的绿色环保新型水处理材料迫在眉睫。本项目拟利用共轭聚合物基体与石墨烯/纳米TiO2光催化剂之间形成的三元组分协同效应，以及三维有序大孔的特殊孔道结构，设计合成三维有序大孔石墨烯/纳米TiO2@共轭聚合物三元光催化膜材料，使其兼具优异的降解水中污染物活性和力学性能。然后，采用自制的新型连续流动式光催化反应器，对该光催化膜降解水中有机污染物的活性进行评估。在此基础上，通过研究光催化膜光生电荷分离、光学吸收和孔径结构等关键影响因素的作用，重点探讨其光催化活性提高机制。此外，将对光催化膜的拉伸强度等力学性能进行测试，进而结合材料表征和有限元数值模拟结果，分析该膜的力学性能增强机理。本课题的研究，将为探索光催化材料在治理水污染领域的实际应用提供有价值的理论依据和实验基础。

中文关键词： 光催化；有序大孔；石墨烯/TiO2复合体；共轭聚合物

英文摘要： As water pollution is increasingly serious, it is urgent to develop a kind of new green material with high efficiency and widespread practicality. In this project, conjugated polymer-supported graphene/TiO2 embedded photocatalytic membranes will be prepared by using the synergy of conjugated polymer substrates and grapheme / nano- TiO2 composite photocatalysts, and special pore structure of three-dimensional ordered macroporous. It has been expected that the prepared photocatalytic membranes can have high activity for the degradation of pollutants in water and excellent mechanical properties. Then, the photocatalytic activity membranes will be evaluated in a new homemade continuous flow reactor. The mechanism of enhanced photocatalytic activity will be importantly discussed by mainly studying its photogenerated charge separation, optical absorption properties and pore structure. In addition, the mechanical properties of photocatalytic membranes, such as tensile strength, will be tested. Furthermore, the reason of improved mechanical properties will be analyzed based on the results of materials characterization and finite element simulation. Research on this subject will provide a theoretical and experimental basis for exploring the practical application of photocatalytic materials in the field of water pollution.

英文关键词： Photocatalysis;Ordered macroporous;Graphene/TiO2 composite;Conjugated polymer