Surface Alkaline-Acidic Characteristics and Photo catalytic Properties of Co1-xZnxFe2O4 Nano-particles Synthesized by Hydrothermal Method

Abstract

This work we present the synthesis, microstructure, surface alkaline-acidic behavior and photo catalytic property of the cobalt zine ferrite Co1-xZnxFe2O4 (x=0–1.0) nano-particles. The oxidation-reduction potential of methyl blue aqueous solution in presence of the ferrite nano-particles at pH=7 under natural sunlight irradiation is obviously negative and increased with increase in Zn content. The degradation rate of methyl blue in aqueous solution on the nano-particles also decreases as increase in Zn content in sunlight. The variations of the oxidation-reduction potential and photo catalytic efficiency with Zn content were discussed on basis of the light absorbance, microstructure, and physicochemical characteristics of the nano-particles. The quasi-kinetic rate constant was estimated to be in the range of ~1.03− 1.92 h-1 that increased as decrease in Zn content.