硫化氢是油气田开发中常见的伴生气体，通过光催化技术分解硫化氢制氢可实现氢能的有效开发和硫化氢的高附加值利用。本项目以InP量子点为光催化剂，依次从壳层结构和表面配体的角度出发，对量子点的结构组成进行优化设计，以期得到高活性和高稳定性的光催化分解硫化氢制氢反应体系。首先，在InP量子点表面合成不同厚度的ZnSe/ZnS双壳层，再在其表面修饰含氨基官能团的多种表面配体，以此构筑光催化分解硫化氢制氢体系，筛选得到有利于制氢的量子点并对反应体系进行优化。其次，利用电子显微分析和红外光谱等技术完善InP量子点的核壳结构与表面配体的表征；利用稳态和超快光谱及（光）电化学等技术从热力学和动力学上深入研究体系的载流子迁移过程；并在此基础上阐明体系的光催化反应机理。最后，揭示InP量子点中ZnSe/ZnS双壳层及氨基表面配体与制氢效率的内在关联机制，为后续光催化反应中量子点的优化设计提供科学依据。

Hydrogen sulfide is a common associated gas in the exploitation of oil and gas reservoir. By photocatalytic hydrogen evolution from hydrogen sulfide splitting, effective exploitation of hydrogen energy as well as highly value-added utilization of hydrogen sulfide is achieved. Using InP quantum dots (QDs) as the photocatalyst, this project focuses on design and optimization of the structure and composition of InP QDs from the perspective of their shell structure and surface ligand, and wishes to obtain photocatalytic system for hydrogen evolution from hydrogen sulfide with high activity and long stability. First, ZnSe/ZnS double shells with different thickness will be grown on the surface of InP QDs, which will be further modified with a series of amino-enriched surface ligands; photocatalytic systems for hydrogen evolution from hydrogen sulfide will be built to determine which InP QDs performs best, and the corresponding reaction system will be further optimized. Then, the shell structure and surface ligand of InP QDs will be thoroughly characterized by techniques such as electronic microscopic analysis and infrared spectroscopy; and the charge transfer process in the reaction system will be studied in-depth from both the thermodynamic and kinetic point of views by methods including (photo)electrochemistry and steady-state and ultrafast spectroscopy; these data altogether will reveal the photocatalytic mechanism of the system. In the end, the detailed influence of the ZnSe/ZnS double shells and amino-enriched surface ligands on the photocatalytic hydrogen evolution efficiency will be demonstrated, and scientific suggestions for design and optimization of InP QDs in the follow-up photocatalytic systems will be given.