Catalytic materials are most effective when synthesised as spherical particles and among the numerous methods suggested for synthesizing spherical particles, the sol-gel method is currently the most promising.
The Sol-Gel method was used by Thai researchers Chatchawan Sookman and Paisan Kongkachuiychay from Kasetsart University different nickel precursors and bases yielded NiO particles with differing particle sizes.
In all, six different systems were studied. NiO particles from Ni(NO3)2 were the largest followed by NiO from NiCl2 and NiSO4 respectively. In addition, use of NaOH yielded slightly larger NiO particles compared to when KOH was used as a precursor. Furthermore, the NiO crystal size was found to increase with an increase in the calcination temperature and concentration of nickel salts.
The researchers found Ni(NO3)2 and NaOH were the most appropriate reactants for synthesis of nickel oxide due to the properties of the precursors.
The article is published in AZojomo* and is available to view at http://www.azom.com/Details.asp?ArticleID=3410
*AZojomo publishes high quality articles and papers on all aspects of materials science and related technologies. All the contributions are reviewed by a world class panel of editors who are experts in a wide spectrum of materials science. [See http://www.azom.com/Journal%20Editorial%20Board.asp]
AZojomo is based on the patented OARS (Open Access Rewards System) publishing protocol. The OARS protocol represents a unique development in the field of scientific publishing the distribution of online scientific journal revenue between the authors, peer reviewers and site operators with no publication charges, just totally free to access high quality, peer reviewed materials science. [See http://www.azom.com/azojomo.asp and http://www.azom.com/oars.asp]
Last reviewed: By John M. Grohol, Psy.D. on 21 Feb 2009
Published on PsychCentral.com. All rights reserved.