Environment-friendly preparation method of nano manganese oxide composite material

Abstract

The invention discloses an environment-friendly preparation method of a nano manganese oxide composite material. The environment-friendly preparation method comprises the following steps: (1) dissolving a certain amount of potassium permanganate into deionized water; (2) dispersing nano-conducting materials into a mixed solution of water and an organic solvent, and adding acid or alkali to regulate the pH value; (3) mixing the two solutions at a stirring or ultrasonic condition; and (4) drying to obtain manganese oxide composite powder after reaction for a period of time at a certain temperature. The prepared nano manganese oxide composite material has the characteristics that the particle size distribution is uniform, the shapes of products are regular and various, and the particle size is easily controlled. The preparation method has the beneficial effects that the preparation speed is high, the technological process is simple, the operation is convenient, the controllability is strong, the cost is low, the environmental pollution is avoided, and the application value is extremely high.

Description

technical field [0001] The invention relates to a green preparation method of a nano manganese oxide composite material, in particular to a technology for rapidly reducing potassium permanganate with an organic mixed solvent to prepare manganese oxide, which belongs to the technical field of nano material preparation. Background technique [0002] The basic structural unit of manganese oxide nanomaterials is manganese-oxygen octahedron, and the basic structural unit of manganese-oxygen octahedron grows along a certain direction by sharing edges or corners to form manganese oxide nanomaterials with tunnel or layered structure. Usually, manganese oxide materials exist in multiple crystal forms, and the common crystal forms are α, β, γ, δ, and ε, ρ. When the basic structural units of the manganese-oxygen octahedron form a tunnel structure through sharing corners in different numbers and ways, α and β crystal configurations with different pore structures are generated, and the t...

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Problems solved by technology

Manganese oxide is also a new type of capacitor material with low price and good effect. It has a high specific surface area and an amorphous structure that can expand the lattice of manganese oxide, and protons are easily stored in it, showing higher capacitance. Micron-sized manganese oxide with a crystal structure produced by the usual precipitation method does not have these characteristics

[0004] Hydrothermal method, solvothermal method, template method and vapor deposition are commonly used methods for preparing manganese oxide nanomaterials. Researchers have prepared a large number of manganese oxide nanomaterials with different crystal forms and morphologies through these methods, but most of the methods are complicated. , The output is small, it is difficult to realize industrial production

Potassium permanganate contains heptavalent manganese and has strong oxidizing properties. However, at present, manganese oxide is usually prepared by hydrothermal decomposition for a long time, or potassium permanganate is reduced by carbon materials. The reduction speed is extremely slow and it is difficult to achieve mass production.

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