Ag_3PO_4/Co_3O_4异质结光催化剂的制备及其光催化性能研究

Study on preparation of Ag_3PO_4/Co_3O_4 heterojunction photocatalyst and its photocatalytic properties

采用简单沉淀法制备Ag_3PO_4、Ag_3PO_4/Co_3O_4异质结光催化剂,并研究两者的比例对异质结型光催化剂性能的影响。研究发现:加入Co_3O_4不会显著增强Ag_3PO_4的光催化活性;只有当Co_3O_4与Ag_3PO_4的摩尔比为1∶5时,其光催化性能最佳。此外,活性基团实验也表明:空穴在罗丹明B的光降解过程中发挥主要作用。

Ag3PO4 and Ag3PO4/Co3O4 heterojunction photocatalysts are prepared by a simple precipitation method,and the ratio influence of the two on the properties of heterojunction photocatalysts is studied.It is found that adding Co3O4 does not significantly enhance the photocatalytic activity of Ag3PO4,and only when the molar ratio of Co3O4 to Ag3PO4 is 1∶5,its photocatalytic performance is the best.In addition,active group experiments also show that cavitation plays a major role in the photodegradation process of Rhodamine B.