【摘 要】
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The fibrous nickel oxide particles were prepared by chemical precipitation and pyrolysis method.TheNiO precursors were firstly precipitated from nickel ions sol
【机 构】
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School of Metallurgical Science and Engineering,Center for Intergrated Research in Science and Engin
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The fibrous nickel oxide particles were prepared by chemical precipitation and pyrolysis method.TheNiO precursors were firstly precipitated from nickel ions solution with addition of oxalate salt,and then the finalNiO 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.Thecrystallinity,purity,morphology of the fibrous NiO were analyzed by XRD and SEM.The fibrous NiO particleswith 100-120 in axis/diameter ratio may be produced under the optimal process conditions that are proposed:theNi2+ concentration is 0.5-0.8 mol/L,pH value is 8.3-8.9,precipitation temperature is 60-75℃,pyrolysis temperature is 500-600 C.
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