Preparation of nanosized NiO powders by mixing acid and base nickel salts and their reduction behavior

Title
Preparation of nanosized NiO powders by mixing acid and base nickel salts and their reduction behavior
Authors
김창삼윤동훈전성운권혁보박상환
Keywords
NiO; nanopowder; synthesis; Ni salt; NiO powder; Ni powder; Particle size; Particle shape
Issue Date
2010-12
Publisher
韓國結晶成長學會誌; Journal of Korean Association of Crystal Growth
Citation
VOL 20, NO 6, 283-288
Abstract
Nanosized NiO powder was prepared by mixing an acid nickel salt and a base nickel salt and their reduction behavior was studied. Ni formate was employed as an acid salt and nickel hydroxide and basic nickel carbonate as base salts. One equivalent acid salt was mixed with 9 equivalent base salt. The mixture of the formate and the carbonate produced ~100 nm spherical NiO powder by heat treatment at 750℃/2 h, but the mixture of the formate and the hydroxide gave rise to ~100 nm pseudo spherical NiO powder by heat treatment at 600℃/2 h and grew fast to give pseudo cubic crystals of 100~600 nm by heat treatment at 750℃/2 h. Reduction by hydrogen gas proceeded much faster for the one with the hydroxide than that with the carbonate to give porous body with well grown necks. Their behavior was studied by analysis of TG/DSC, XRD, and SEM.
URI
http://pubs.kist.re.kr/handle/201004/39312
ISSN
1225-1429
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KIST Publication > Article
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