| abstract |
The invention relates to a method for preparing micro-nano silver particles in an aqueous solution system, comprising the following steps: mixing an aqueous silver salt solution with an aqueous complexing agent to obtain a silver complex precursor solution; One-step reduction reaction to obtain micro-nano silver particles. The invention reacts in an aqueous solution at normal temperature and pressure, does not use high molecular polymer as protective agent and dispersing agent, and uses hydrazine hydrate as reducing agent to reduce the complex precursor of silver. The preparation method is simple, the residue of high molecular polymer on the surface of the silver powder is avoided, and the prepared flower-shaped micro-nano silver particles have regular morphology, uniform particle size distribution, good dispersibility, controllable size and high yield. |