采用煅烧-沉积-光照还原法制备了g-C₃N₄/Ag/Ag₃PO₄复合材料（CAA），利用XRD、FT-IR、SEM、TEM、UV-Vis、XPS和PL等对其进行表征。在模拟太阳光下，CAA光催化降解亚甲基蓝（MB）和清除氮氧化物（NO_x）的性能显著优于Ag/Ag₃PO₄和g-C₃N₄，最优的CAA₁₀在10 min内的MB降解率为99.49%、NO_x清除率为63.11%。结果表明，Z机制耦合银纳米粒子的局域表面等离子体共振效应是复合材料光催化性能增强的主要原因。

g-C₃N₄/Ag/Ag₃PO₄ composites (CAA) are constructed by calcination-deposition-light reduction method,and characterized by means of XRD,FT-IR,SEM,TEM,UV-Vis,XPS and PL.Compared with Ag/Ag₃PO₄ and g-C₃N₄,CAA exhibits much better activity for photocatalytic degradation of methylene blue (MB) and removal of nitrogen oxides (NO_x) under simulated sunlight irradiation.The degradation rate of MB reaches 99.49% within 10 min and the removal rate of NO_x reaches 63.11% over the optimal photocatalyst CAA₁₀.The synergistic effect of Z-scheme system and the local surface plasmon resonance effect of Ag nanoparticles is thought as main reason for the enhancement of photocatalytic performance of composites.