摘要：采用氨络合沉淀法制备了Ni(OH)2 微粒。基于Ni(OH)2的结构特征 ,考察了阴离子、氨浓度、反应陈化时间对Ni(OH)2的结构控制规律 ,并用负离子配位多面体生长基元理论对此进行解释 ,认为通过改变反应体系物理化学条件来改变有关生长基元及其维度、连接方式是控制粉体结构的有效途径
关键词：Ni(OH)2;结构控制;负离子配位多面体;生长基元;
Abstract：Ni(OH)2 powder is prepared by virtue of the method of NH3 coordination precipitation．Based on characters ofNi(OH)2 structure，the effcts of anion、NH3 amount and precipitation time on Ni(OH)2 structure are investigated，which is explained with the theoretical model that the grow units are polyhedral structure of cordination anions．The results show that Ni(OH)2 structure can be effctively controlled by grow unit and its dimension、cnnection patterns varying with change of physical and chemical conditions in aqueous solution．
Key words：Ni(OH)2 ；structural control；polyhedral structure of coordination anion；grow unit
