PREPARATION OF THE SILVER PARTICLES

摘要

A preparation method for silver power is provided to control the granularity of silver power by adjusting a reduction reaction speed through adjustment of a mole ratio of reduction solution. A preparation method for silver power comprises the steps of manufacturing silver ion aqueous solution, and completely depositing silver chloride by adding hydrochloric acid aqueous solution or chloride to the silver ion aqueous solution and then stirring the silver ion aqueous solution. The silver chloride is separated from the silver ion aqueous solution. Reduction solution, which is formed by dissolving hydroxide in hydrogen peroxide, is added to the separated silver chloride and is stirred until the silver chloride is completely reduced into silver at a normal temperature. The silver is washed and filtered using distilled water or ethanol and is dried to obtain fine silver power.