g-C3N4量子点修饰MOFs（以UiO-66为例）光催化材料的设计合成及可见光诱导分解水制氢性能研究

Based on the idea of enhanced photo-induced charge separation and photoelectron directed migration, with a view of the two aspects, namely, structure design of catalyst and construction of reaction system, we design and synthesize the novel, efficient and stable dye sensitized g-C3N4 quantum dots loaded MOFs composite photocatalyst. Moreover, Taking advantage of the large surface area, strong dye adsorption and visible light capture capacity of MOFs, give play to the electron transfer properties of g-C3N4 quantum dots, we will systematically research the bonding mode between g-C3N4 quantum dots, Uio-66 and dye molecules and the intrinsic mechanism of the enhancement of the electron-hole separation, electron transfer, and the enhancement of the stability and hydrogen production activity of the photocatalyst. It is expected to realize the effective separation and directional migration of photo-generated charge, so as to build a high efficient catalyst and hydrogen production reaction system. In addition, we expect to enhance the stability of the g-C3N4 quantum dot/MOFs catalyst and develop a scientific, reasonable and cheap preparation technology. Under the theoretical guidance of the above studies, we will effectively design and construct the dye sensitized g-C3N4/Uio-66 catalyst, and the novel high efficiency stable visible light induced hydrogen reduction reaction system.

基于强化光生电荷分离以及电子定向迁移的思想，从催化剂结构设计和反应体系的构建两方面入手，在研究g-C3N4和Uio-66该类材料稳定性的基础上，设计合成新型、高效、稳定的g-C3N4量子点/Uio-66复合光催化剂，旨在发挥Uio-66大比表面积和强吸附染料及可见光捕获的能力，辅以g-C3N4量子点禀赋的良好电子传递特性，系统研究g-C3N4量子点、Uio-66、染料三者之间的键合方式及该结合方式在提高电子/空穴对分离、电子定向传递进而增强光催化剂稳定性和产氢活性的内在机制，调控光生电荷分离和定向迁移，构建高效催化剂及制氢反应体系。另外通过本研究预期解决g-C3N4量子点/MOFs该类复合催化剂的稳定性问题并开发科学、合理、廉价的催化剂批量制备技术。在此基础上，为染料敏化g-C3N4/Uio-66催化剂分子结构设计、构筑以及高效稳定新型可见光诱导还原水制氢反应新体系的构建提供理论指导。

设计合成新型、高效、稳定的g-C3N4量子点/Uio-66复合光催化剂，发挥Uio-66大比表面积和强吸附染料及可见光捕获的能力，辅以g-C3N4量子点禀赋的良好电子传递特性，系统研究了g-C3N4量子点、Uio-66、染料三者之间的键合方式及该结合方式在提高电子/空穴对分离、电子定向传递进而增强光催化剂稳定性和产氢活性的内在机制，调控光生电荷分离和定向迁移，构建高效催化剂及制氢反应体系。研究了g-C3N4量子点/MOFs该类复合催化剂的稳定性问题并开发科学、合理、廉价的催化剂批量制备技术。在此基础上，为染料敏化g-C3N4/Uio-66催化剂分子结构设计、构筑以及高效稳定新型可见光诱导还原水制氢反应新体系的构建提供指导。