Removal of Methyl Orange from Aqueous Solutions by Using Zn-Al Layered Double Hydroxide as Photocatalyst
Keywords:layered double hydroxides, structural characterization, calcination product, photocatalytic activity, dye removal.
The Zn-Al layered double hydroxide (LDH) was prepared using co-precipitation method at constant pH andcharacterized from structural point of view. Due to the high concentration of ZnO obtained after LDH calcinations, thematerial can be used as photocatalyst in removal of organic persistent compounds from water. The photocatalytic activityof the as-synthesized and calcined materials was evaluated for the degradation of Methyl Orange dye under UVirradiation. The influence of calcination temperature, solid: liquid ratio and initial dye concentration on photocatalyticactivity of LDH was studied. The increase of calcination temperature and solid: liquid ratio and the decrease of initial dyeconcentration leads to increasing degradation efficiency.
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