Synthesis of Nb2O5 center dot nH(2)O nanoparticles by water-in-oil microemulsion

Autor(es)

Rodrigues, Liana Alvares ^[1] ; Caetano Pinto da Silva, Maria Lucia ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Escola Engn Lorena, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Non-Crystalline Solids; v. 356, n. 3, p. 125-128, FEB 1 2010.
• Citações Web of Science: 3

Resumo

Hydrous niobium oxide (Nb(2)O(5)center dot nH(2)O) nanoparticles had been Successfully prepared by water-in-oil microemulsion. They were characterized by X-ray diffraction (XRD), thermal analysis (TG/DTG), Fourier transform infrared spectroscopy (FTIR), BET surface area measurement, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The results showed that the nanoparticle was exactly Nb(2)O(5)center dot nH(2)O with spherical shape. Their BET surface area was 60 m(2) g(-1). XRD results showed that Nb(2)O(5)center dot nH(2)O nanoparticles with crystallite size in nanometer scale were formed. The crystallinity and crystallity size increased with increasing annealing temperature. TT-phase of Nb(2)O(5) was obtained when the sample is annealed at 550 degrees C. (C) 2009 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 06/05421-0 - Síntese de nanopartículas de óxido de nióbio hidratado via microemulsão inversa
• Beneficiário: Liana Alvares Rodrigues
• Modalidade de apoio: Bolsas no Brasil - Mestrado