研究基于半导体量子点的多组分光解水制氢体系，对于解决能源短缺以及环境污染问题有着重要的科学意义。本项目提出制备单分散的Ni掺杂CdSe/ZnS核壳量子点纳米结构，旨在通过Ni元素的掺杂，在CdSe/ZnS核壳量子点中形成具有高催化活性的围绕Ni原子周围的共催化剂，从而将光捕获剂（CdSe/ZnS核壳量子点）同共催化剂高质量的结合到一起；同时通过对量子点CdSe内核尺寸的大小、ZnS壳层的厚度、Ni原子在量子点中的含量以及位置等参数的精确控制，显著提高基于Ni掺杂CdSe/ZnS核壳量子点的多组分光解水制氢体系的效率；并进一步通过对比研究具有不同参数的Ni掺杂CdSe/ZnS核壳量子点的光解水制氢活性与其物理化学性质变化之间的关系，深入探讨相应的机理。

The research on the semiconductor quantum dots (QDs)-based multi-component photo-induced water splitting hydrogen producing system is important for well solving the problems of the energy shortage and environmental pollution. Our proposal is to design and synthesis of monodispersed Ni-doped CdSe/ZnS core/shell QDs. Through the introduction of Ni dopant into the CdSe/ZnS nanocrystals, we expect to create the highly active Ni related cocatalyst in the ZnS shell of the QDs to realize the high quality combination of the light absorber and the cocalyst; meanwhile, through the control of the CdSe core size, the ZnS shell thickness and the amount of the Ni dopant as well as their position in QDs, we expect to significantly enhance the hydrogen photogeneration efficiency of Ni-doped CdSe/ZnS QDs-based multi-component photo-induced water splitting hydrogen producing system. In addition, combing with the detailed studies of the changing of the physicochemical properties of the QDs with different parameters, the exact effects of these parameters on the catalytic performance of QDs will be discussed, and the possible mechanism will be proposed.