Ag3PO4光催化剂的合成与再生  

Synthesis and regeneration of AgPO photocatalyst

作　　者：于红超 杜俊杰 张梦萌 邓慧宇[1] YU Hongchao;DU Junjie;ZHANG Mengmeng;DENG Huiyu(School of Chemistry,Biology and Materials Science,East China University of Technology,Nanchang 330000,China)

机构地区：[1]东华理工大学化学生物与材料科学学院,江西南昌330000

出　　处：《兵器材料科学与工程》2020年第5期71-76,共6页Ordnance Material Science and Engineering

基　　金：江西省教育厅科学技术研究项目(GJJ180404);东华理工大学科研基金(自然科学类)(DHBK2017166)。

摘　　要：采用配位-沉淀法制备多面体结构Ag3PO4光催化剂,用XRD、SEM和UV-Vis对其粉体进行结构特性分析,通过可见光催化降解罗丹明B的试验研究Ag3PO4多面体的光催化性能及光腐蚀现象,并对失效光催化剂进行再生处理。结果表明:Ag3PO4多面体具有优良的可见光催化降解染料性能,经过两次循环降解反应,初始Ag3PO4多面体发生严重的光腐蚀,被完全还原成单质Ag。失效光催化剂经过H2O2和Na2HPO4反应后实现光催化剂再生,并完全恢复初始Ag3PO4光催化剂的活性。Ag3PO4 photocatalyst with polyhedron structure was prepared by ligand-precipitation method and characterized by using XRD,SEM and UV-Vis diffuse reflectance. The photocatalytic activity and photocorrosion was evaluated using RhB degradation under visible light irradiation,and then the deactivated photocatalyst was regenerated. The results show that the Ag3PO4 polyhedron has excellent photocatalytic performance. Besides,the Ag3PO4 polyhedron suffered serious photocorrosion after two cycles of dye degradation reaction under visible light irradiation,which is completely reduced to metal Ag. H2O2 and Na2HPO4 are adopted to regenerate Ag3PO4 from the deactivated photocatalyst,which almost completely restore the photocatalytic activity of the initial Ag3PO4 product.

关 键 词：Ag3PO4 单质Ag 光催化 光催化剂再生 

分 类 号：O643.32[理学—物理化学]