High-entropy ferrite porous ceramic material as well as preparation method and application thereof

Abstract

The invention discloses a high-entropy ferrite porous ceramic material as well as a preparation method and application thereof, and belongs to the field of inorganic functional materials. The chemical composition of the high-entropy ferrite porous ceramic material is (Mg<0.4-x>Co<x>Ni<0.2>Zn<0.2>Cu<0.2>)Fe<2>O<4>, wherein x is more than 0 and less than or equal to 0.2. The preparation method comprises the following steps: dissolving glycine, magnesium nitrate, cobalt nitrate, nickel nitrate, zinc nitrate, copper nitrate and ferric nitrate in water to obtain a mixed solution; adjusting the pH value of the obtained mixed solution, and conducting heating until the solution is subjected to combustion reaction to obtain precursor powder; and carrying out heat treatment, molding and sintering on the obtained precursor powder to obtain the high-entropy ferrite porous ceramic material. The high-entropy ferrite porous ceramic material disclosed by the invention integrates the advantages of a high-entropy effect and a foam structure synergistic effect, has a self-supporting capability and a high specific surface area, is convenient to transport, store and recycle, and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of inorganic functional materials, and in particular relates to a high-entropy ferrite porous ceramic material and its preparation method and application. Background technique [0002] The waste liquid, vehicle exhaust and industrial waste gas discharged in today's industrial production have brought increasingly serious damage to the human living environment. The pollutants in these waste liquid and waste gas are often in the form of various organic compounds or CO and nitrogen oxides. Mainly, the composition is complex, and the direct purification treatment is extremely difficult. Heterogeneous catalytic degradation technology is a typical strategy for cost-effective removal of pollutants. [0003] Spinel type ferrite (structure general formula AFe 2 o 4 , A=Fe, Cu, Ni, Co, Mn, Zn, etc.) are magnetic, and the microstructures such as variable oxygen vacancies in the lattice, combinations of valence states of variou...

AI Technical Summary

Problems solved by technology

However, spinel ferrite (general structural formula AFe 2 o 4 ) has less than 5 components on the A site, and the synergistic catalytic effect of multiple components is weak. At the same time, the catalyst is still a powder particle, which is difficult to avoid loss when the effluent is discharged, and the recovery rate is low.

[0006] Chinese patent application CN113045304A discloses a mixed spinel structure ferrite absorbing material and its preparation method, its molecular formula is Co 1-x Ni x Fe 2 o 4 , the results show that the material has a good microwave absorption effect in the 2-18GHz microwave band, but the material is still powdery and has no self-supporting ability, and the component types of the A site are less than 5

[0007] To sum up, there is still a lack of a ferrite multifunctional material with a certain macroscopic size, which is convenient for portable transportation, storage, recycling, self-supporting ability, high entropy effect and foam structure in the prior art.

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