Abstract
This work studies the process of formation of the spinel structure of nickel (II) -copper (II) ferrite. A possible mechanism for the formation of single-phase spinel samples is considered. It consists of the stage of formation of chelate complexes of nickel (II), copper (II), iron (III) cations with citric acid and their subsequent thermal decomposition. The materials obtained are studied by X-ray phase analysis and the BET technique. The catalytic activity of the synthesized ferrite Cu0.5Ni0.5Fe2O4 in the process of oxidative destruction of methyl orange in the presence of hydrogen peroxide is established. It is shown that the process is significantly accelerated with increasing temperature. The activation energy of the reaction was computed. It was found that the activation energy decreases in the presence of a catalyst. The results can be used to obtain materials suitable for industrial wastewater treatment using organic dyes in production cycles.
Highlights
The modern technologies for improving water quality and water purification from organic and inorganic pollutants require the development of new methods for obtaining materials with desired properties
This work aims to study the processes of structure formation of copper (II) - nickel (II) ferrite with the composition Cu0.5Ni0.5Fe2O4 and its catalytic properties in the process of oxidative destruction of an organic dye
An aqueous solution of ammonia was added with vigorous stirring, and a colored flocculent precipitate was observed
Summary
The modern technologies for improving water quality and water purification from organic and inorganic pollutants require the development of new methods for obtaining materials with desired properties. Nickel and copper ferrites can be used to obtain active catalysts [5, 8], including the synthesis of CO from CO2 [8], electrocatalysts for splitting water to produce hydrogen [8], supercapacitor electrodes [9,10,11,12], sensors [13,14,15]; they possess bactericidal properties [1]. The synthesis of such materials is discussed in a vast number of publications, which indicates the unflagging scientific interest. Nanosized materials exhibit increased activity in catalytic and adsorption processes requiring structurally sensitive properties
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