Method for preparing urchin-shaped hydroxyferric oxide and urchin-shaped ferric oxide nano material

Abstract

The invention relates to a method for preparing an urchin-shaped hydroxyferric oxide and urchin-shaped ferric oxide nano material, which adopts a glucose guiding hydrolysis process and an annealing process and specifically comprises that: a ferrous salt is used as a raw material, the hydrolysis reaction is guided by adopting a saccharide structure indicator, the weight ratio of the glucose to an iron source is 0.5 to 5, and the molar concentration of the saccharide structure indicator is 0.02 to 0.2M; and then, an oxidizing gas is introduced into the raw materials at the temperature of between 25 and 100 DEG C, a yellow green urchin-shaped hydroxyferric oxide product is obtained through stirring reflux reaction, washing and filtration, and the product is annealed to form the urchin-shapedferric oxide nano material with adjustable specific surface area and topography. The method has the advantages of simple operation, low requirement for equipment, low cost and high efficiency, and iseasy in industrial application and popularization; and the synthesized nano material has the advantages of high purity, little impurity content and large specific surface area, can obviously improve the performance of a catalyst and a battery, and has remarkable economic benefit and social benefit.

Description

technical field [0001] The invention relates to the field of nanometer materials, in particular to a simple method for producing sea urchin-like iron oxyhydroxide and sea urchin-like iron oxide nanomaterials by using a glucose-guided hydrolysis process and an annealing treatment process. Background technique [0002] In recent years, the construction of one-dimensional (1D), two-dimensional (2D) and three-dimensional (3D) ordered or hierarchical nanostructures using simple building blocks (such as nanoparticles, nanorods / tubes, nanosheets, etc.) Widely concerned, because these complex nanostructures not only maintain the basic characteristics of the original building blocks, but also bring some new physical and chemical properties, and are expected to have broad application prospects in the fields of catalysis, electrochemistry, and microwave absorption. (Hydroxy)iron oxide, an important semiconductor functional material, has good weather resistance, light resistance, non-to...

AI Technical Summary

Problems solved by technology

The preparation methods published in these documents mainly utilize high-temperature hydrothermal conditions, or expensive surfactants, or special metal organic salts, so the efficiency is low or the cost is high

At the same time, the above synthesis method is not conducive to the regulation and control of the microstructure of the product, and the low specific surface area of ​​the obtained material cannot meet the actual needs.

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