Process of preparing carbon-supported metal catalyst by physical deposition

摘要

The present disclosure relates to a method and an apparatus for preparing nanosized metal or alloy nanoparticles by depositing metal or alloy nanoparticles with superior size uniformity on the surface of a powder as a base material by vacuum deposition and then dissolving or melting the base material using a solvent or heat. The method solves the problems of the existing expensive multi-step synthesis method based on chemical reduction and allows effective synthesis of metal or alloy nanoparticles with very uniform size and metal or alloy catalyst nanoparticles supported on carbon at low cost.

主权项

1. A method for preparing an electrochemical catalyst, comprising:
obtaining a water-soluble support with a metal catalyst or an alloy catalyst deposited by depositing a catalytic metal on a water-soluble support; obtaining a dispersion comprising the water-soluble support with a metal catalyst or an alloy catalyst deposited and a carbon support; obtaining a dispersion comprising a metal catalyst supported on the carbon support by stirring the dispersion at 80-90° C. for 1-24 hours, and stirring the dispersion comprising a metal catalyst supported on the carbon support at room temperature for 1-24 hours; obtaining the metal catalyst supported on the carbon support in solid phase by washing and filtering the dispersion comprising the metal catalyst supported on the carbon support; and drying and pulverizing the metal catalyst supported on the carbon support in solid phase, wherein the water-soluble support is selected from sugar powder comprising glucose, sucrose and fructose, water-soluble metal salt powder comprising sodium chloride, potassium chloride and sodium bicarbonate, water-soluble polymer powder comprising PVA and PVP, or a combination thereof.