制备条件对纳米NiO微粉的影响  

Effects of Prepared Conditions on Formation of Nanosized NiO Powders

作　　者：程虎民[1] 胡欣[1] 马季铭[1] 齐利民[1] 

机构地区：[1]北京大学化学学院,北京100871

出　　处：《中国粉体技术》2001年第5期20-22,共3页China Powder Science and Technology

摘　　要：用化学沉淀法制备了纳米立方NiO的微粉 ,研究了介质 pH、不同沉淀剂和热处理温度对纳米NiO粒子大小和聚结状态的影响。用NaOH作沉淀剂 ,控制介质 pH为 9～10 ,经 2 70～ 30 0℃热处理 4h ,制备得到粒子尺寸约 5nm 。Nanosized NiO powders were prepared with the chemical precipitation method.The effects of pH,precipitant and heat treatment temperature on formation of nanosized NiO powders were researched.Nanosized NiO(～5nm)powders,which were redispersed easily in water,were obtained under following conditions:NaOH as precipitant,pH～10,heat-treatment temperature 270～300℃ for 4h.When H 2C 2O 4(oxalic acid)was used as precipitant,the agglomeration between NiO particles was serious.

关 键 词：纳米NIO 化学沉淀法 沉淀剂 制备 氧化镍 半导体 纳米微粉 

分 类 号：TN304.21[电子电信—物理电子学] TB383[一般工业技术—材料科学与工程]