In order to solve environmental pollution problems, a kind of photocatalyst for high-efficiency utilization of sunlight is proposed. The simple solvothermal method is used to synthesize the ternary heterojunction g-C₃N₄/Ag/ZnO with 3D flower-like structure. The surface plasmon resonance effect of metal Ag can improve the response of photocatalyst to visible light. Electrons conduction at heterojunction interface can enhance the separation and transfer efficiency of photogenerated electrons and holes. The heterojunction g-C₃N₄/Ag/ZnO have excellent photocatalytic degradation efficiency and mineralization efficiency for different organic dyes, phenols reagents and antibiotics under visible light, such as 2,4-dichlorophenol, phenol and rhodamine B et al. Similarly, the photocatalytic activity of the ternary heterojunction g-C₃N₄/Ag/ZnO is optimal compared to the pure g-C₃N₄, g-C₃N₄/ZnO composite and g-C₃N₄/Ag composite. It can be known that the ternary heterojunction g-C₃N₄/Ag/ZnO has great photocatalytic stability through cyclic tests. The important role of hydroxyl radicals in photocatalytic reactions is confirmed by radical species quenching experiments.

为了解决环境污染问题，提出了一种高效利用阳光的光催化剂。采用简单的溶剂热法合成具有3D花状结构的三元异质结gC ₃ N ₄ / Ag / ZnO。金属Ag的表面等离子体共振效应可以改善光催化剂对可见光的响应。异质结界面处的电子传导可以增强光生电子和空穴的分离和转移效率。异质结gC ₃ N ₄/ Ag / ZnO在可见光下对不同的有机染料，酚类试剂和抗生素（例如2,4-二氯苯酚，苯酚和若丹明B等）具有出色的光催化降解效率和矿化效率。类似地，与纯gC ₃ N ₄，gC ₃ N ₄ / ZnO复合物和gC ₃ N ₄ / Ag复合物相比，三元异质结gC ₃ N ₄ / Ag / ZnO的光催化活性最佳。可以知道，三元异质结gC ₃ N ₄通过循环测试，/ Ag / ZnO具有很好的光催化稳定性。自由基自由基猝灭实验证实了羟基自由基在光催化反应中的重要作用。