습식 화학적 환원법에 의한 AgNO3로부터 Ag 분말의 제조 1. 균일한 구형 Ag 분말의 제조를 위한 최적 반응계 확립

Abstract

Ag powder was prepared from AgNO3 by wet chemical reduction method using various reduction agent system involving AgNO3, Ag2O(AgCl) and Ag complex ion aqueous solution. The pure Ag powder could be prepared regardless of reaction system but the particle shape and distribution were affected very much according to the kind of reduction agents and reaction systems. The optimum reaction system for the preparation of the silver powder having the uniform particle shape and size distribution was Ag complex ion aqueous solution-reduction agent system and in particular, H2O2 and C6H8O6 as a reduction agent leaded the more uniform particle shape and size distribution.