JOSE FERNANDO QUEIRUGA REY
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Artigo IPEN-doc 11404 Synthesis of Insub(2)Osub(3) nanoparticles by thermal decomposition of a citrate gel precursor2005 - REY, J.F.Q.; PLIVELIC, T.S.; ROCHA, R.A.; TADOKORO, S.K.; TORRIANI, I.; MUCCILLO, E.N.S.Artigo IPEN-doc 14071 Synthesis and characterization of spherical and narrow size distribution indium oxide nanoparticles2009 - SOUZA, E.C.C.; REY, J.F.Q.; MUCCILLO, E.N.S.This work reports the synthesis of indium oxide nanoparticles and their thermal, structural, microstructural and optical characterization. The preparation method is based on a surfactant-free room temperature soft chemistry route. Spherical indium oxide nanoparticles (about 8 nm in diameter) were obtained after thermal treatment of gels at 400 ºC for 2 h, as shown by X-ray diffraction experiments and nitrogen adsorption measurements. Transmission electron microscopy observations confirm the single-crystalline nature of the produced nanoparticles. The photoluminescence emission spectrum at room temperature shows a broad peak with onset at approximately 315 nm as a result of quantum size effect as revealed by small-angle X-ray scattering.