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Author: search.filters.author.Kahattha, C.Subject: search.filters.subject.B. Microstructure-final

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    Item type:Publication,
    Physical properties of V-doped TiO2 nanoparticles synthesized by sonochemical-assisted process
    (2013-05-01)
    Kahattha, C.
    ;
    Wongpisutpaisan, N.
    ;
    Vittayakorn, N.
    ;
    Pecharapa, W.
    V-doped TiO<inf>2</inf> nanoparticles were synthesized by sonochemical process using titanium isopropoxide as a titanium source, vanadyl acetylacetonate as a dopant source. Sonication was conducted using sonic horn operated at 20 kHz for 20 min until the completely precipitated product was reached. The as-synthesized precipitates with various vanadium dopant (1-5 mol %) were calcined at 500-1000 °C for 4 h. The relevant physical properties of the nanoparticles were characterized by X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM) and transmission electron microscope (TEM). The anatase phase TiO<inf>2</inf> nanoparticles can be synthesized by sonochemical process. Post calcinations process results in the anatase-to-rutile phase transformation and the enhancement in crystallinity with increasing temperature. The results also indicate good incorporation of V ions in TiO<inf>2</inf> lattices and significant effect of V dopant on alternation of interplanar spacing of TiO <inf>2</inf>. © 2012 Elsevier Ltd and Techna Group S.r.l.