【摘要】 通过简易化学合成法制备了g-C₃N₄/Ag₂O p-n异质结复合光催化剂,利用XRD、XPS、SEM、TEM、DRS等对所制复合材料的物相结构、微观形貌及光学性质进行表征,借助近红外光下催化降解罗丹明B（RhB）试验评价其光催化活性,重点探讨了g-C₃N₄/Ag₂O p-n异质结复合材料的光催化降解机理。结果表明,当g-C₃N₄、Ag₂O质量比为1∶16时,所制g-C₃N₄/Ag₂O复合光催化剂具有最佳的近红外光催化性能且活性稳定;h⁺和·O^-₂活性自由基在近红外光催化降解过程中发挥了主要作用。更多还原

【Abstract】 The g-C₃N₄/Ag₂O p-n heterojunction composite photocatalysts were prepared via a simple chemical synthesis method. The phase structure, morphology and optical property of as-prepared composites were characterized by XRD, XPS, SEM, TEM and DRS. The photocatalytic activity of the samples were evaluated by photocatalytic degradation of rhodamine B under near-infrared light, and the photocatalytic degradation mechanism of g-C₃N₄/Ag₂O p-n heterostructure composites was mainly discussed. The results show that when the mass ratio of g-C₃N₄ to Ag₂O is 1∶16, the prepared g-C₃N₄/Ag₂O composite photocatalyst has the optimum near-infrared photocatalytic performance and stable activity. The h⁺ and·O^-₂ active radicals play a primary role in the NIR photocatalytic degradation.更多还原