Abstract
Nano-titanium dioxide was prepared in a microemulsion system by solvothermal method. The microemulsion system is composed of ammonium hexafluorotitanate((NH4)2TiF6) used as titanium source, water, cetyl trimethyl ammonium bromide (CTAB), n-butanol, and cyclohexane. The influences of reaction time, amount of urea added and the mole ratio of water to CTAB (ω) on particle size, and photocatalytic activity were investigated by photocatalytic degrading methyl orange and X-ray diffraction (XRD) characterization. The results show that the optimum preparation conditions are that reaction time 12 h, the amount of urea added 1.5 g, and the ratio of water to CTAB ratio (ω) 18:1.
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