TiO2负载杂多酸光催化降解亚甲基蓝的研究

摘要

以TiO2负载杂多酸β-SiW12/TiO2为光催化剂.研究了其对亚甲基蓝模拟染料废水的光催化降解性能,讨论了亚甲基蓝溶液的酸度、亚甲基蓝溶液的初始浓度以及催化剂β-SiW12/TiO2投加量等对亚甲基蓝溶液脱色效果的影响.结果表明,β-SiW12/TiO2加入量为12 mg,亚甲基蓝的初始浓度为30 mg/L,pH值=6,脱色率达到86.79%.%The photocatalytic performance of supported heteropoly acid on TiO2catalyst β - SiW12/TiO2was tested by photocatalytic degradation of methylene blue under the UV ray.The effects of the catalyst β -SiW12/TiO2quantity,the initial concentration of the methylene blue and the solution pH value of methylene blue on decolorizing efficiency of the solution were discussed in detail. The results showed that the degradation rate of methylene blue with β -SiW12/TiO2was 86.79% in the solution containing 30mg/L of methylene blue when the dosage of catalyst was 12 mg and the pH was 6.