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中文摘要：
采用溶胶-凝胶技术将Keggin型H4SiW12O40负载在SiO2上，并用H2O2溶液对其进行敏化，制得H4SiW12O40／SiO2／H2O2光催化剂,考察在模拟自然光条件下，甲基橙的初始浓度、溶液pH以及催化剂用量对甲基橙可见光催化降解的影响．实验发现，在甲基橙初始质量浓度为15mg／L、溶液pH为1．0、催化剂的质量浓度为6g／L的优化情况下，光降解3．0h，甲基橙的降解率达到99．0％．
英文摘要：
With the Sol-gel method,the Keggin-type H4SiW12O40 was loaded on SiO2 and sensitized by H2 02 solution to have obtained H4 SiW12O40/SiO2/H2O2 , which was used in investigating the photocatalyt-ic degradation of methyl orange to study the effect of the initial methyl orange concentration, the solution pH and the catalyst dosage on the photocatalytic degradation rate of methyl orange under simulated natural light irradiation. The results demonstrate that when initial concentration of methyl violet is 15 mg/L,cata-lyst dosage is 6 g/L and the pH is 1.0, the degradation ratio of methyl orange is as high as 99.0% after 3. 0 h simulated natural light irradiation.
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