钒取代磷钨酸-硫化钨复合物的设计合成与光催化性能

Preparation,Synthesis and Properties of Vanadium-substituted Polyoxometalate Tungsten Disulfide Composites

以钒取代Dawson型钨磷酸和类石墨烯材料硫化钨为建构基元,采用水热法设计合成了新型多酸基硫化钨(P_(2)W_(15)V_(3)-WS_(2))复合材料.运用FT-IR、XRD、Raman等测试手段进行材料结构表征.结果表明该复合材料中多酸的骨架结构完整,多酸和硫化钨之间存在化学键合作用.以200 W氙灯为模拟太阳光源,染料亚甲基蓝(MB)为光降解的目标污染物,进行P_(2)W_(15)V_(3)-WS_(2)复合物光催化性能研究.研究结果显示P_(2)W_(15)V_(3)-WS_(2)复合材料表现出很强的光催化活性.

Using vanadium-substituted Dawson-type tungstophosphoric acid and graphene-like tungsten sulfide as building blocks,a new type of polyacid-based tungsten sulfide(P_(2)W_(15)V_(3)-WS_(2))composite was designed and synthesized by hydrothermal method.The material structure was characterized by FT-IR,XRD,Raman and other test methods.The results show that the skeleton structure of the polyacid in the composite is complete,and there is chemical bonding between the polyacid and tungsten sulfide.The photocatalytic properties of P_(2)W_(15)V_(3)-WS_(2) complexes were studied with 200 W xenon lamp as the simulated solar light source and the dye methylene blue(MB)as the target pollutant for photodegradation.The results showed that the P_(2)W_(15)V_(3)-WS_(2) composite exhibited strong photocatalytic activity.