Method for preparing ferrum series non-crystalline state nanometer simple substance

Abstract

The invention belongs to inorganic nanometer material field, especially relates to a method for preparing a ferrious noncrystalline nanometer simple substance, comprising the following steps: weighing two solids of A and B, respectively preparing solution B and solution A having concentration of 0.1-0.4mol / L, the mol concentration ratio of solution A and solution B is 1:1; adding deionized water in solution A, implementing ultrasonic concussion to generate mass air bubbles in the solution and when the air bubbles disappear, stopping the ultrasonic concussion and the reaction, then adding with the solution B to react in a centrifugal machine, wherein the reaction time is 2 -5 minutes, and finally getting black sediments, after washing to obtain the required product. The solid A is KBH4 powder, solid B is any one of FeCl2(or FeCl3), NiCl2.6H2O or CoCl2.6H2O etc. The solution A is KBH4 water solution, the solution B is any one of FeCl2( or FeCl3) ethanol solution, NiCl2 ethanol solution or CoCl2 ethanol solution etc. The invention has advantages of easily obtaining raw material, low cost and simple operation and equipment, small and even grain size of the product, is easy to industrialize, and can provide new approach and way for the synthesis of nanometer material.

Description

technical field [0001] The invention belongs to the field of inorganic nanometer materials, and in particular relates to a method for preparing an iron-based amorphous nanometer elemental substance. Background technique [0002] Nano-materials of iron-group metals [Ni, Fe, Co] are widely used soft magnetic materials and have excellent catalytic properties. The so-called "amorphous metal", also known as amorphous metal or metallic glass. It is different from general metals with a crystal structure, and is a metal or alloy solid without a three-dimensional periodic arrangement of atoms; that is, it does not have a long-range ordered crystal lattice arrangement beyond the range of several atomic distances. Around the 1930s, amorphous metals were prepared by evaporation or electrodeposition. However, due to the limitation of experimental conditions, the systematic and in-depth research on the nature and properties of its amorphous state has not been conducted. It was not unti...

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Problems solved by technology

[0003] At present, the methods for preparing iron-based nano-elements mainly include soft chemical method, ultrasonic decomposition method, LB film technology assembly, sol-gel electrodeposition method, microemulsion method, mechanical alloying method, etc., and there are powders produced in these methods. Disadvantages such as poor particle size distribution uniformity, harsh reaction conditions, and low efficiency

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