氮化碳 (g-C3N4) 是近十年来受到广泛关注的、具有光催化特性的半导体材料。但二维heptazine结构重复单元本征结构特征导致π电子局域化，加速激发态激子复合，阻碍光生载流子分离和电子迁移。本项目拟从氮化碳表面缺陷组装具有氧化催化活性的多金属氧簇来调控界面电子转移，研究多金属氧酸簇在g-C3N4表面单分散固载的合成方法及组装作用机理，以斑马鱼作为生物模型评价光催化农药降解的活性与去毒效果及降解机制，评价光催化C-H键活化的选择性与产率，揭示活性位点、电子结构及构效关系。从而获得高效、单分散POMs@g-C3N4光催化剂，阐明环境降解和有机催化中光催化氧化过程的动力学、反应势垒与界面电子态耦合机理。

Carbon nitride (g-C3N4) semiconductors with photocatalysis function have attracted tremendous research interests. But, the intrisinc heptazine built structral repeating unit leads to the localization of π conjugate electrons, which suppress the separation of the photogenerated exciton and electron transfer. In this project, we intend to fabricate the surface defects for g-C3N4 to assemble the redox active polyoxometales (POMs) cluster to realize the regulation of interfacial electron transfer. To investigate the synthesis of single dispersed POMs cluster on the surface of g-C3N4 and the assembling mechanism. Then, using the zabrafish as biological model to evaluate the photocatalytic degradation capability and mechanism for the pesticides. To elucidate the photocatalytic activity for C-H activation, and the relationship between active sites, electronic structure and reaction mechanism. Finally, we aim to obtain efficient and single dispersed POMs@g-C3N4 Photocatalyst, and understand the photocatalytic mechanism for pesticide degradation and C-H activation and interfacial electronic state coupling for POMs and g-C3N4.