催化剂的可见光全谱响应和光生电荷分离增强，对于大幅提高光解水产氢性能具有重要意义。本课题拟通过将具有高摩尔吸光系数的卟啉共轭π材料与具有高表观量子效率的g-C3N4进行层层自组装，来获得具有可见光全谱响应、高界面电荷分离效率和高产氢活性的自组装卟啉/g-C3N4复合结构催化剂，并阐明其界面电荷分离及产氢活性增强机制。采用静电自组装技术，调节层间界面π-π作用，实现该复合材料层数和层厚的调控以及自组装结构的可控制备，拓展其光吸收至700纳米。通过调节界面间π-π作用，增强卟啉/g-C3N4界面的内建电场，促进光生电荷分离。通过调节自组装卟啉/g-C3N4复合结构的层数和层厚，实现对电荷传输通道数目和电荷传输距离的调控，促进光生电荷迁移，获得高产氢活性。本课题的实施有助于阐明自组装卟啉/g-C3N4二维复合结构的界面电荷分离机制及产氢活性增强规律，对可见光全谱响应光催化剂的发展具有促进作用。

The research on the catalyst with full spectrum response of visible light and strong photo-induced charge separation is of great significance for greatly improving the photocatalytic hydrogen production. This project intends to layer-by-layer combine porphyrin conjugated π material which has high molar absorption coefficient with g-C3N4 which has high apparent quantum efficiency to obtain a 2D/2D composite structure with full-spectrum response of visible light, strong interfacial electric field and high hydrogen production activity. And this project aims to illuminate the mechanism on the enhancement of charge separation and hydrogen production via this 2D/2D self-assembled porphyrin/g-C3N4. Through electrostatic self-assembly technology, the regulation on π-π interaction between porphyrins/g-C3N4 interface and the adjustment on layer number and layer thickness of this 2D/2D composite structure will be realized. By adjusting the layer number and layer thickness and the controllable preparation of this structure, the light absorption of this porphyrin/g-C3N4 composite can be extended to 700 nm. Through the regulation on π-π interaction the polarized built-in electric field between porphyrins/g-C3N4 interface will be enhanced, thereby accelerating the the photo-induced charge separation. Through adjusting the thickness and number of each component layers in this composite, the charge transfer channel number and charge transfer distance can be regulated, thereby promoting the charge separation and transfer on porphyrin/g-C3N4 interface. Thus higher hydrogen production activity over this self-assembled porphyrin/g-C3N4 with 2D/2D composite structure will be obtained. This project will be helpful to clarify the mechanism on the enhancement of interfacial charge separation and hydrogen production via this self-assembled porphyrin/g-C3N4 with 2D/2D composite structure, and will promote the development of photocatalys with full spectrum response of visible light.