Journal
POWDER TECHNOLOGY
Volume 171, Issue 1, Pages 63-68Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.powtec.2006.09.013
Keywords
statistical design; nickel; nanoparticles; hydrothermal reduction; surfactant
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Synthesis of nickel nanopowders from aqueous solution using hydrothermal reduction method with hydrazine hydrate as a reducing agent and Cetyl trimethyl ammonium bromide (CTAB) as a surfactant was investigated. Statistical design was used to study the effects of reaction time, concentration of nickel chloride, and concentration of surfactant on the nickel particles size. Formed nickel particles were characterized using XRD and SEM. The formation of nickel single phase was revealed from XRD patterns. On the other hand, SEM showed that the nickel particles are in nanosized ranges from 55 nm to 250 urn. The analysis of the results indicated that the reaction time and surfactant addition were the controlling factors. The reduction of nanocrystalline nickel hydroxide Ni(OH)(2) into Ni is the possible formation mechanism. (c) 2006 Elsevier B.V. All rights reserved.
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