酞酸酯类塑化剂具有类持久性有机污染物的特征，进入空气、水和土壤后不易分解，易于对生态环境和人类健康造成危害。本项目拟以发展高性能助剂-石墨烯共修饰型半导体光催化材料为基础，构建酞酸酯类塑化剂水污染控制的新方法。首先，在半导体光催化材料(如TiO2, WO3等)表面修饰具有大比表面积和良好导电能力的石墨烯纳米片，再通过离子注入法在石墨烯/半导体复合材料表面修饰具有氧还原功能的过渡金属离子助剂(如Fe(III)、Cu(II)、Ni(II)等)，从而制备具有高效电荷传输(石墨烯)与利用(过渡金属离子助剂)的高性能光催化材料；以典型酞酸酯类塑化剂为降解对象，研究其在紫外/可见光作用下的光催化降解过程和降解机理，揭示石墨烯和过渡金属离子助剂对酞酸酯类塑化剂降解的协同作用机制，发展高效处理酞酸酯的新型光催化技术。本项目的实施与完成对环境中持久性有机污染物新型治理技术的应用具有重要的指导意义。

It is very difficult for phthalate esters (PAEs) to be decomposed when they flow into the air, water and soil, which can cause harmful to our ecological environment and human being health. Thus, it is an urgent task to development new and effective methods for the removal of phthalate esters. In this project, we intend to prepare highly efficient semiconductor photocatalysts based on the synthestic effect of cocatalyst and graphene for the enhanced photocatalytic performance, and to develop a new technology of photocatalysis for the control and removal of phthalate esters in the water. First, graphene-based semiconductor composite photocatalysts are prepared via one-step green hydrothermal method from precursor (such as TiO2) and graphene oxide (GO); then, cocatalyst-semiconductor/rGO (reduced graphene oxide) are synthesized via an impregnation method in the aqueous solution by using transition metal (such as Fe, Cu, and Ni) compounds as the cocatalyst raw materials. The decomposition kinetics and mechanism of the phthalate esters under UV/visible-light irradiation are carefully investigated, with the aim of building a new technology of photocatalytic decomposition for the removal of phthalate esters. The implementation of this project may provide new insights for the design and development of other new highly efficient photocatalysts. In addition, the application of new control technology of the phthalate esters via photocatalysis will bring great environmental and economic benefits.