Preparation method of rare earth hydride nanoparticle

Abstract

The invention relates to a preparation method of rare earth hydride nanoparticles, which belongs to the technical field of nano material preparation. The rare earth hydride is an important functional material, and can be widely applied in hydrogen storage batteries, optical devices, hydrogen sensors, pressure actuators and other fields. However, the rare earth hydride can not be prepared easily. In the preparation method of the rare earth hydride nanoparticles with related raw materials, one of such rare elements as lanthanum, praseodymium, neodymium, terbium and dysprosium is adopted as an anode, metal tungsten is adopted as a cathode, the preparation is carried out under the hydrogen and argon mixed atmosphere (wherein the ratio of the hydrogen is 20-80 percent by volume) with the total pressure being 1 atmosphere, the arc current of 100-200A, the arc voltage of10-40V and the arcing time of 0.5-2 hour(s) are selected. The particle sizes of the rare earth hydride nanoparticles provided by the invention are uniform and are less than 100nm. The adjustment of the average particle size of the produced rare earth hydride nanoparticles can be realized through adjusting process parameters for the same rare element.

Description

Technical field [0001] A method for preparing rare earth hydride nanoparticles belongs to the technical field of nano material preparation. Background technique [0002] Rare earth hydrides are an important class of functional materials, which are widely used in many fields such as hydrogen storage batteries, optical devices, hydrogen sensors and pressure actuators. [0003] In recent years, nanomaterials have attracted widespread attention. Its surface effect, small size effect, macroscopic quantum tunneling effect, quantum size effect, etc. make the physical and chemical properties of the material change significantly. As an important functional material, the properties of rare earth hydride nanoparticles have also become a hot issue for researchers. Unfortunately, due to the strong chemical activity of rare earth elements, it is easy to oxidize in the air. Even if rare earths form compounds with hydrogen, their chemical activity is still very strong. Therefore, the preparati...

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Problems solved by technology

Therefore, the preparation of rare earth hydride nanoparticles is very difficult

It is difficult to solve these problems by using some conventional material preparation and processing technologies at present.

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