Abstract
The preparation of layered double hydroxide (LDH) substituting Zn in the structure was attempted to create an environmentally.friendly photocatalyst with anion adsorption capacities. Zn-Al-substituting LDH with the Zn/Al molar ratio of 4 was synthesized by adopting the natural processes. The adsorption property of an anionic dye, methyl orange, on Zn-Al-substituting LDH was characterized by batch experiment. Zn-Al-substituting LDH exhibited an extremely high affinity for MO anions. The photodegradation behavior of methyl orange on Zn-Al-substituting LDH was evaluated by determining ultraviolet-visible absorption spectra under ultraviolet light irradiation. The results indicated that Zn-Al-substituting LDH certainly showed the photocatalytic activities for methyl orange, and the degradation reaction of methyl orange was accelerated without being stabilized under ultraviolet irradiation. It was expected that Zn-Al-substituting LDH could be utilized as an efficient photocatalyst for harmful organic anions.
