二氧化钛纳米微粒的制备及对染料橙黄Ⅱ的光催化氧化

The TiO2 nanoparticles were prepared with sol-gel processing by using tetrabutyl titanate as van substance.We obtained that the average size of TiO2 nanoparticles was 18nm by Scherrer's formula.The photocatalytic oxidation of orange Ⅱ was studied and different factors on discolouration of orange Ⅱ in the presence of TiO2 were also carried.The results indicated that the discolouratin rate of orange Ⅱ reached up 84.3% in 100min,and almost 100% in 180min at amount of catalyst 1.0g/L,pH 3.0 and the power of UV light 30W,the initial concentration of dye 10mg/L.