The Calcium Zirconate (CaZrO3) catalyst was prepared by solution combustion synthesis method and extensively characterized by XRD, SEM, TGA, DTA, Reflectance spectroscopy, BET surface area and powder density. Indigo carmine (IC) dye was used as model pollutant to study its photocatalytic degradation under UV light irradiation. The degradation of IC was investigated by COD analyzer and UV-Visible spectroscopy. The influences of catalyst amount, initial IC concentration, pH of the reaction solution and irradiation time were investigated. Results of characterization and photocatalytic study indicated the successful formation of CaZrO3 catalyst and nearly 92 percent IC dye was degraded in 90 min. Recycling experiments confirmed the relative stability of the catalyst.
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