分别以钨酸钠和钛酸四异丙酯为原料,通过溶胶-凝胶法制备了纳米WO3及TiO2胶体,并将两种材料按照一定比例进行复配和煅烧,制备了TiO2与WO3的异质节型光催化材料。循环伏安测试表明制备的材料具有较好的电化学性能。光催化测试表明,TiO2与WO3摩尔比为1∶10的复合材料显示出最好的光催化性能,其对亚甲基蓝的降解率为73.7%,是纯WO3的1.52倍。
This study selected sodium tungstate and tetraisopropyl titanate as raw materials to prepare tungsten trioxide (WO3) and titanium oxide (TiO2) colloids.Heterojunction photocatalytic materials of TiO2 and WO3 were prepared by adapting ratio between TiO2 and WO3 using solid calcination method.Cyclic voltammetry test showed that the prepared materials had excellent electrochemical performance.Photocatalytic results revealed that the composite material with a TiO2 to WO3 molar ratio of 1∶10 exhibited the best photocatalytic performance,achieving a degradation rate of 73.7% for methylene blue,which was 1.52 times higher than that of pure WO3.
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