Rev.Adv.Mater.Sci. (RAMS)
No 1, Vol. 33, 2013, pages 61-64

PREPARATION AND CHARACTERIZATION OF
NANOPOROUS NICKEL USING PS BEAD AS
PHYSICAL TEMPLATE

Jinghua Xu, Haoran Geng, Jiawei Sun and Liuwei Ding

Abstract

Monodisperse PS beads were prepared by miroemulsion polymerization method. Styrene monomer (0.99%), potassium persulfate (0.44%), and sodium dodecyl sulfonate (0.27%) was used as precursor, initiator, and surface active agent, respectively.and then used a novel and simple electroless plating method coating nickel on PS beads substrate by pd-free activation process (nickel acetate 2.27%, sodium borohydrate 2.27%, and sodium hypophosphite 2.50%), lastly, the mixture samples were annealed at 500 úC for 5 h to obtain nanoporous nickel. SEM, EDS, XRD was used to characterize these samples. N2 sorption was used to analyses of pore structure. The results indicate that pure PS beads show 120-150 nm of particle size, while the aperture of the nanoporous nickel is about 100-130 nm of particle size, the shell thickness is about 15-20 nm, and the specific surface areas is 161.69 m2 g-1.

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