Preparation and Characterization of Ultra-Fine Silver Powder by Hydrogen Peroxide and Ascorbic Acid Reduction

Abstract

In this work, using chemical reduction method, we synthesized silver particles with different sizes and morphologies by simply changing the proportion of the associative reducing agents. More specifically, when the reducing agent is ascorbic acid, the morphologies of silver particles are quasi-spherical shapes, the diameter size of silver nanoparticles was in the range from 200 nm to 300 nm. When the reducing agent is hydrogen peroxide, the morphologies of silver particles are irregular bulks, the diameter size of silver nanoparticles was in the range from 1 um to 2 um. When the volume ratio of ascorbic acid (0.09M) and hydrogen peroxide (0.98M) is 1: 1, the morphologies of silver particles are unique, they are coral clusters reunited by long silver nanoplates.