Feasibility of using a rotating packed bed in preparing coupled ZnO/SnO₂ photocatalysts

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• 作者：Chia-Chang Lin ; ^{higee@mail.cgu.edu.tw} ; Yu-Ju Chiang
• 关键词：Rotating packed bed ; Photocatalysts ; ZnO/SnO2 ; Decolorization
• 刊名：Journal of Industrial and Engineering Chemistry
• 出版年：2012
• 期刊代码：P29_1226086x
• 类别：ce
• 出版时间：25 July, 2012
• 卷：18
• 期：4
• 页码：1233-1236
• 文件大小：536 K

摘要

In this work, coupled ZnO/SnO₂ photocatalysts were prepared in a rotating packed bed (RPB) via co-precipitation. The precursors of coupled ZnO/SnO₂ photocatalysts were formed from solutions of zinc sulfate, tin tetrachloride and sodium hydroxide. The calcinations of these precursors yielded coupled ZnO/SnO₂ photocatalysts. The effect of calcination temperature on the characteristics and photocatalytic activity of coupled ZnO/SnO₂ photocatalysts was studied. The photocatalytic activity of coupled ZnO/SnO₂ photocatalysts was evaluated using the photocatalytic decolorization of methylene blue. The experimental results reveal that coupled ZnO/SnO₂ photocatalysts that were obtained by calcination at 600 掳C for 10 h were the most efficient in decolorizing methylene blue.