| abstract |
A method for uniformly coating carbon impurity-free metal nanoparticles on the surface of oxide ceramic powder, comprising: grinding and mixing a metal organic raw material and an oxide ceramic powder, then putting same into a rotary reaction chamber, then, under rotary and heating conditions, introducing an oxidizing gas to oxidize the metal organic raw material into a metal oxide, and finally introducing a reductive gas to reduce the metal oxide into metal-state nanoparticles. Uniform coating of the metal-state nanoparticles is realized, and the problems of the roughening and growing of the nanoparticles caused by a coating reaction with a long time at a high temperature are avoided. The method of the present invention is simple, and is short in preparation period. The prepared metal nanoparticles are dispersed uniformly, and have a wide application prospect in a plurality of fields as a catalytic material, a conductive ceramic, and the like. |