Journal of Industrial and Engineering Chemistry

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Feasibility of using a rotating packed bed in preparing coupled ZnO/$SnO_2$ photocatalysts

  • Lin, Chia-Chang (Department of Chemical and Materials Engineering, Chang Gung University) ;
  • Chiang, Yu-Ju (Department of Chemical and Materials Engineering, Chang Gung University)
  • Published : 2012.07.25
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Abstract

In this work, coupled ZnO/$SnO_2$ photocatalysts were prepared in a rotating packed bed (RPB) via coprecipitation. The precursors of coupled ZnO/$SnO_2$ photocatalysts were formed from solutions of zinc sulfate, tin tetrachloride and sodium hydroxide. The calcinations of these precursors yielded coupled ZnO/$SnO_2$ photocatalysts. The effect of calcination temperature on the characteristics and photocatalytic activity of coupled ZnO/$SnO_2$ photocatalysts was studied. The photocatalytic activity of coupled ZnO/$SnO_2$ photocatalysts was evaluated using the photocatalytic decolorization of methylene blue. The experimental results reveal that coupled ZnO/$SnO_2$ photocatalysts that were obtained by calcination at $600^{\circ}C$ for 10 h were the most efficient in decolorizing methylene blue.

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References

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