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An improved chemical reduction route for fine nickel powders

Title
An improved chemical reduction route for fine nickel powders
Authors
Bae C.-O.Kim Y.-H.Son J.H.Hwang S.-J.Kwon Y.-U.Lee B.-Y.Kim Y.-S.
Ewha Authors
황성주
SCOPUS Author ID
황성주scopus
Issue Date
2005
Journal Title
Journal of Industrial and Engineering Chemistry
ISSN
1226-086XJCR Link
Citation
vol. 11, no. 6, pp. 902 - 910
Indexed
SCIE; SCOPUS; KCI WOS scopus
Abstract
We report an improved chemical reduction route toward fine nickel powders by using nickel hydrazine complexes [Ni(N2H4) 3SO4 and Ni(N2H4)nCl 2 (n = 2 and 3)] as the starting materials, rather than Ni(OH) 2, which is used in the conventional procedure. The reductions of the hydrazine complexes had reaction rates that were three to ten-fold higher than those of the conventional method. As a result, the products consist of homogeneous, phase-pure, spherical, fine nickel particles that have smooth surfaces; they were formed without the need for additives or extreme reaction conditions. The reaction rates could be related to the solubilities of the precursors, which increase in the order Ni(N2H4) 2Cl2 > Ni(N2H4) 3Cl2 > Ni(N2H4) 3SO4; we propose a reaction mechanism based on this observation.
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자연과학대학 > 화학·나노과학전공 > Journal papers
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