摘要
All kinds of spherical ultrafine nickel powders, varied in mean particle size (0.1-5μm),were prepared by chemical reduction in aqueous solution. The pH effect on the production of nickel powder and the main factors of their morphological control were studied. The nickel powder with purity 98.5% was obtained in the Na2CO3-NaHCO3 buffer system at pH 9.2-11. The surface-rubbed stirring oar helped to the preparation of nickel particles. The mean particle size was decreased to subndcron range by using AgNo3 as nucleating agent. PVP was an efficient agent to regulate particle shape andreduce aggregation.
All kinds of spherical ultrafine nickel powders, varied in mean particle size (0.1-5μm),were prepared by chemical reduction in aqueous solution. The pH effect on the production of nickel powder and the main factors of their morphological control were studied. The nickel powder with purity 98.5% was obtained in the Na2CO3-NaHCO3 buffer system at pH 9.2-11. The surface-rubbed stirring oar helped to the preparation of nickel particles. The mean particle size was decreased to subndcron range by using AgNo3 as nucleating agent. PVP was an efficient agent to regulate particle shape andreduce aggregation.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1996年第5期460-463,共4页
Acta Physico-Chimica Sinica
关键词
镍粉
超细镍粉
化学还原
溶液还原法
Ultrafine nickel powder preparation, Chemical reduction
