光解水制氢是解决当前能源危机和环境污染的有效途径，提高光生电荷的分离是实现高性能光解水制氢的关键。然而，缺乏对载流子输运过程中等离激元共振和肖特基结对光生电荷共同调控的深刻认识，缺乏对光生电荷定向输运的控制，阻碍了光解水制氢异质结材料的开发。针对这一问题，本项目提出通过将宽带隙材料引入光催化体系，构建“TiO2/贵金属/SrSO4”三元光催化材料，利用金属等离激元共振与肖特基异质结协同作用来实现光生载流子的定向输运。主要研究：1. 三元光催化材料体系的设计（各组分比例等）；2.探索三元光催化材料体系的制备方法（纳米化和形貌控制）；3.建立等离激元共振与肖特基结协同模型；4.揭示材料、组分和能带匹配对光解水产氢影响的物理机制。该项目的研究，将获得高效的光催化分解水的材料体系，给出等离激元共振和肖特基势在载流子输运过程的协同作用的机理，为设计高效光解水制氢新材料体系提出有效依据。

Photocatalytic hydrogen generation from water splitting is one of the most promising routes to address energy and environmental concerns. Promoting photogenerated charge separation is an important strategy to realize the high efficiency of hydrogen generation. However, the lack of the steering the migration of electrons or holes to different semiconductor surfaces for reduction or oxidation reactions and the understanding of charge migration mechanism by building Schottky junction and plasmon resonance hinder the development of high photocatalysts. To solve this problem, we propose a new design TiO2/Noble metal/SrSO4 for a high photocatalyst by synergizing the plasmonic effect with two Schottky junctions. Steering the migration of photogenerated charges is achieved by introducing a material SrSO4 with a broad band gap to the Schottky junction TiO2/noble metal. The investigation will include, 1) design of ternary photocatalyst systems(component), 2) the tunable synthesis of TiO2/Noble metal/SrSO4, 3) proposing the model of synergizing the plasmonic effect with the Schottky junction and plasmon resonance, 4) presenting the mechanism of photocatalytic hydrogen generation based on the TiO2/Noble metal/SrSO4. Thus this project will offer an photocatalyst with excellent performance of photocatalytic hydrogen generation, and the mechanism for effectively steering the charge flow by synergizing the plasmonic effect with the Schottky junction. This design of TiO2/Noble metal/SrSO4 is distinct and unique in its fundamental mechanism and may offer a new concept for designing an excellent photocatalysts.