The inefficiency of charge separation is the major practically limited factor towards high hydrogen evolution reaction (HER) of photocatalysts. Therefore, design and construction of efficient photocatalysts system with efficient charge transfer path is urgently necessary for HER. Herein, we report an effective strategy to construct Pt–MoSe₂/g-C₃N₄ heterostructure through integrating facile solvothermal technique and solution-phase hybridization method. The synthesized ternary Pt–MoSe₂/g-C₃N₄ heterostructures exhibit greatly enhanced photocatalytic hydrogen production than bare g-C₃N₄ and Pt/g-C₃N₄ catalyst. The enhancement factor is directly correlated with strong photosynergistic effect of charge-carrier generation and separation path coupling heterojunction sensitization on MoSe₂/g-C₃N₄ with Pt nanoparticle. Moreover, the mechanism of enhanced catalytic activity is fully studied by electrochemical characterizations and photocurrent analysis.

电荷分离的低效率是导致光催化剂的高氢逸出反应（HER）的主要实际限制因素。因此，对于HER来说，迫切需要设计和构建具有有效电荷转移路径的高效光催化剂体系。在本文中，我们报告了一种通过整合简便的溶剂热技术和溶液相杂交方法来构建Pt-MoSe ₂ / gC ₃ N ₄异质结构的有效策略。合成的三元Pt–MoSe ₂ / gC ₃ N ₄异质结构比裸露的gC ₃ N ₄和Pt / gC ₃ N表现出大大增强的光催化氢产生₄催化剂。增强因子与电荷载流子产生的强光协同效应以及分离路径耦合异质结敏化对具有Pt纳米颗粒的MoSe ₂ / gC ₃ N _4的作用直接相关。此外，通过电化学表征和光电流分析充分研究了增强催化活性的机理。