摘要
The fibrous nickel oxide particles were prepared by chemical precipitation and pyrolysis method. The NiO precursors were firstly precipitated from nickel ions solution with addition of oxalate salt, and then the final NiO particles were obtained by pyrolysis of the precursor. The effects of the pH value, precipitation temperature, reactant concentration, addition of surfactant on the morphology of the precursor particles were investigated. The crystallinity, purity, morphology of the fibrous NiO were analyzed by XRD and SEM. The fibrous NiO particles with 100120 in axis/diameter ratio may be produced under the optimal process conditions that are proposed: the Ni2+ concentration is （0.5）0.8 mol/L, pH value is 8.38.9, precipitation temperature is 6075 ℃, pyrolysis temperature is 500600 ℃.
The fibrous nickel oxide particles were prepared by chemical precipitation and pyrolysis method. The NiO precursors were firstly precipitated from nickel ions solution with addition of oxalate salt, and then the final NiO particles were obtained by pyrolysis of the precursor. The effects of the pH value, precipitation temperature, reactant concentration, addition of surfactant on the morphology of the precursor particles were investigated. The crystallinity, purity, morphology of the fibrous NiO were analyzed by XRD and SEM. The fibrous NiO particles with 100120 in axis/diameter ratio may be produced under the optimal process conditions that are proposed: the Ni^(2+) concentration is (0.5)0.8 mol/L, pH value is 8.38.9, precipitation temperature is 6075 ℃, pyrolysis temperature is 500600 ℃.
出处
《中国有色金属学会会刊：英文版》
CSCD
2003年第6期1440-1445,共6页
Transactions of Nonferrous Metals Society of China
基金
Project(19980 5 3 3 0 6)supportedbytheDoctoralFoundationofEducationMinisterofChina
关键词
氧化镍
制备
化学沉淀法
高温分解法
XRD
SEM
chemical precipitation and pyrolysis
precursor
fibrous NiO particles
preparation
