Study on Preparation of ZnO/a-Fe2O3/Attapulgite Nanocomposites and Degradation of Methyl Orange

The photocatalytic composites of nano ZnO/-Fe2O3/ATP were prepared by coprecipitation and hydrothermal reaction and then were applied to degrade simulated wastewater of methyl orange, which showed that the degradation rate of methyl orange reached 85.3% under UV light. The degradation reaction of methyl orange was consistent with first-order kinetic equation with k=0.456/h proving that the composite materials had efficient photocatalytic activity and excellent decolorization rate.