钒酸银光催化降解氯胺磷的研究

Research on Photocatalytic Degradation of Chloramine Phosphorus with Ag_3VO_4

以NH_4VO_3和AgNO_3为原料,采用溶剂热法制备了新型可见光催化剂Ag_3VO_4。利用XRD、SEM和UV-Vis等测试手段对样品的结构、形貌及光吸收性能进行了表征,并以有机磷农药氯胺磷为目标降解物,考查了催化剂的可见光催化性能。结果表明:所得Ag_3VO_4晶体结构属于单斜晶相,在反应体系pH值较高时所得样品的形貌为棒状,具有较好的可见光吸收性能,对氯胺磷有较好的降解效果。

Ag_3VO_4 photocatalysts were synthesized by solvothermal route with NH_4VO_3 and AgNO_3 as raw materials. The as-prepared samples were characterized by XRD,SEM and UV-Vis. The photocatalytic activities were examined by monitoring the degradation of chloramines phosphorus in an aqueous solution under solar light radiation. The results indicated that the product was pure Ag_3VO_4 with monoclinic phase structure,Ag_3VO_4 in sticks was formed while at a high pH value. All as-prepared samples exhibited strong photo response in the visible light region,and had an excellent effect on degradation of chloramines phosphorus.