| In order to protect the ultrafine silver powder from the agglomeration, the preparation process of silver powder in ionic liquid was studied. The ionic liquid was mixed with silver nitrate solution and reduced under different conditions. The structure, surface morphology, particle size and size distribution of the silver samples were studied by XRD, SEM and laser particle size analyzer. The results showed that adding quantity of ionic liquids has a great influence on the morphology, crystallization and particle size distribution. The best performance of silver powder can be obtained under the process conditions: 100 mL AgNO3 (0.05 mol/L), 1 g PVP, 10 mL ionic liquids, and reaction at 120℃. |
