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采用浸渍法制备了H6P2W18O62/Ti O2-Si O2光催化剂,并采用傅里叶变换红外光谱(FTIR)、X射线粉末衍射(XRD)、扫描电子显微镜(SEM)对其进行了表征。通过光催化剂H6P2W18O62/Ti O2-Si O2对含甲基橙模拟废水进行处理,结果表明,H6P2W18O62/Ti O2-Si O2光催化剂表现出较高的光催化性能,在催化剂用量为1.39 g/L,甲基橙溶液质量浓度为5 mg/L,初始p H=3.5,反应时间2.5 h的条件下,甲基橙的降解率可达99.2%,且产生了协同效应。H6P2W18O62/Ti O2-Si O2光催化剂对罗丹明B、亚甲基蓝和甲基红均具有较高的光催化性能,降解率达84.0%~100.0%。光催化剂还表现出较好的重复使用性能,第5次降解率仍为94.4%。
The H6P2W18O62 / Ti O2-Si O2 photocatalysts were prepared by impregnation method and characterized by FTIR, XRD and SEM. The photocatalyst H6P2W18O62 / Ti O2-Si O2 was used to treat simulated wastewater containing methyl orange. The results showed that the photocatalyst H6P2W18O62 / Ti O2-Si O2 showed high photocatalytic activity. When the amount of catalyst was 1.39 g / L, Methyl orange solution concentration of 5 mg / L, the initial p H = 3.5, the reaction time 2.5 h, the degradation rate of methyl orange up to 99.2%, and the synergistic effect. H6P2W18O62 / Ti O2-Si O2 photocatalyst has high photocatalytic activity for rhodamine B, methylene blue and methyl red, with a degradation rate of 84.0% -100.0%. The photocatalyst also showed better reusability, the fifth degradation rate was still 94.4%.