【摘要】 以钛酸丁酯为前驱物,在离子液体(1-丁基-3-甲基咪唑六氟磷酸盐)、水和无水乙醇所组成的混合溶剂中采用溶胶-凝胶法及微波干燥,制备了硫掺杂纳米TiO2光催化剂。采用XRD对催化剂的结构进行了表征,以甲基橙为模拟污染物,高压汞灯和卤钨灯为光源,考察了掺杂量、微波干燥等因素对硫掺杂TiO2光催化剂活性的影响。结果表明,硫掺杂TiO2催化剂活性高于未掺杂TiO2催化剂;且当硫脲与钛酸丁酯物质的量比为5.0,在家用微波炉于功率210 W干燥25 min,再在马弗炉600℃焙烧处理2 h制备的催化剂,具有最佳的光催化降解效果。更多还原

【Abstract】 Using Ti(OBu)4 as the precursor S-doped nanoparticle TiO2 photocatalysts were prepared in ionic liquids by sol-gel method and then microwave drying,and characterized by XRD.The effects of S/Ti mole ratio and microwave drying on the photocatalytic activity of S-doped nanoparticle TiO2 for degradation of methyl orange were investigated,using ultraviolet lamp and tungsten halogen lamp as irradiation source.The results indicated that the S-doped nanoparticle TiO2 catalysts exhibited higher photocatalytic activity than that of pure TiO2,with best photocatalytic activity under S/Ti mole ratio of 5.0,drying by 210 W microwave for 25 min and calcination at 600 ℃ for 2 h.更多还原