Surface Alkaline-Acidic Characteristics and Photo catalytic Properties of Co1-xZnxFe2O4 Nano-particles Synthesized by Hydrothermal Method
L. L. Wang
College of materials science and engineering, Shaanxi university of science and technology, Xi'an, Shaanxi (710021), China.
H. Y. He *
College of materials science and engineering, Shaanxi university of science and technology, Xi'an, Shaanxi (710021), China.
*Author to whom correspondence should be addressed.
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.
Keywords: Nano-structured materials, optical spectroscopy, oxidation reduction potential, photo catalytic property