Preparation method of high specific surface area ZnMn2O4

Abstract

The invention discloses a preparation method of high specific surface area ZnMn2O4. The method comprises the following steps: dissolving zinc nitrate and manganese nitrate into water, then adding a right amount of glycine into the solution, stirring for dissolving, and then adding a certain amount of SiO2 colloid into the solution; heating the reaction mixture at the temperature of 250-400DEG C until a combustion reaction occurs; after the reaction is finished, washing the product with distilled water, and then etching the solid product for 24h at the temperature of 80 DEG C by using a sodiumhydroxide solution; after that, drying to obtain the high specific surface area ZnMn2O4. The preparation method provided by the invention adopts a solution combustion method, so that the temperature required to initiate the reaction is lower and is only 250-400 DEG C; a surface active agent does not need to be additionally used, batch production is easy to realize, the method is simple in technology and short in production cycle, and operation is easy to implement; the prepared ZnMn2O4 material has the characteristics of being low in density, large in specific surface area (reaching up to 186.4m<2> / g), good in permeability, and the like, thus having good application prospect in the fields such as environment, catalysis as well as energy storage and conversion.

Description

technical field [0001] The invention belongs to the field of nanomaterial manufacturing and chemical industry, specifically a high specific surface area ZnMn 2 o 4 method of preparation. Background technique [0002] Spinel-type double metal oxides are an important class of inorganic functional materials, which are widely used in many fields such as electrochemical energy storage, sensors, biomedicine and catalysis. Wherein ZnMn 2 o 4 It has attracted great attention due to its rich structure and excellent magnetic, optical, electrical, catalytic and other properties. The traditional method of preparing spinel oxides is to calcine the mixture of oxides at high temperature, but maintain the reaction at a higher temperature. In recent years, it has been reported in the literature that the preparation of ZnMn 2 o 4 However, these methods have disadvantages such as complex process, harsh process conditions, high energy consumption, long production cycle, and low output, w...

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Problems solved by technology

[0009] In order to solve ZnMn in the prior art 2 o 4 Nanomaterials have defects such as small specific surface area and harsh preparation conditions. The present invention provides a high specific surface area ZnMn 2 o 4 preparation method

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