掺金属离子TiO_2/ZnO催化剂光降解甲基橙的研究

PHOTOCATALYTIC DEGRADATION OF METHYL ORANGE WITH METAL-IONS-DOPED TiO_2/ZnO SEMICONDUCTOR

通过湿式机械混合法制备系列TiO2/ZnO复合催化剂，并向其中掺杂不同金属离子．以甲基橙为模拟污染物进行光催化降解实验．结果表明复合催化剂中TiO2和ZnO的最佳配比为60％-80％；在分别掺杂含量为10^-4mol／g的Ag^＋，Zr^4＋，Sn^4＋离子后催化活性有明显提高；焙烧活化处理温度对掺杂不同金属离子催化剂活性有不同的影响。

TiO2/ZnO coupled semiconduetors were prepared by damp meet,at, teal -mixed method and different ions were adulterated into them. tn the test with methyl orange as the simulacrum of the photocatalytic reaction, the be, st proportion of TiO2/ZnO couple semiconductor was hown to be 60% - 80%. Ag^＋ , Zr^4＋ and Sn^4＋ doping markedly improved the photocatalytie activity, and the temperature to ealeine had different influences on the photocatalytic activity of different metal ions - doped coupled semiconductors.