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Author: search.filters.author.Boonchom, BanjongSubject: search.filters.subject.Characterization

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    Item type:Publication,
    Non-isothermal decomposition kinetics of NiFe2O4 nanoparticles synthesized using egg white solution route
    (2009-01-01)
    Boonchom, Banjong
    ;
    Maensiri, Santi
    The thermal decomposition kinetics of nickel ferrite (NiFe <inf>2</inf>O<inf>4</inf>) precursor prepared using egg white solution route in dynamical air atmosphere was studied by means of TG with different heating rates. The activation energy (E <inf>α</inf>) values of one reaction process were estimated using the methods of Flynn-Wall-Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS), which were found to be consistent. The dependent activation energies on extent of conversions of the decomposition reaction indicate "multi-step" processes. XRD, SEM and FTIR showed that the synthesized NiFe<inf>2</inf>O<inf>4</inf> precursor after calcination at 773 K has a pure spinel phase, having particle sizes of ~54 ± 29 nm. © 2009 Akadémiai Kiadó, Budapest, Hungary.