Preparation of Micrometer-and Nanometer-sized Hollow Nickel Spheres by Autocatalytic Reduction

Abstract

Abstract: A facile, novel and low-cost method for synthesizing hollow nickel spheres is reported in this paper. The hollow nickel spheres were characterized by field emission scanning electron microscopy, transmission electron microscope and X-ray powder diffraction. And the factors responsible for the control of the size distribution of the hollow spheres were discussed. The hollow nickel spheres was prepared by autocatalyzing the redox reaction around the colloidal particles. The concentration of reaction solution and molar ratio of Ni²⁺ to NaOH are important factors that affect the size distribution of the nickel spheres, and this two processing parameters can be regulated to synthesize micrometer and nanometer-sized hollow nickel spheres.

Key words: Hollow metal spheres, Micrometer- and nanometer-sized powder, Autocatalytic reduction, Colloid template

CLC Number:

O648

TrendMD:

DENG Yi-Da, ZHAO Ling, LIU Xi, SHEN Bin, LIU Lei, HU Wen-Bin. Preparation of Micrometer-and Nanometer-sized Hollow Nickel Spheres by Autocatalytic Reduction[J]. Chem. J. Chinese Universities, 2005, 26(7): 1309.

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Preparation of Micrometer-and Nanometer-sized Hollow Nickel Spheres by Autocatalytic Reduction

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