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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/42265
Title: 
BaMoO(4) powders processed in domestic microwave-hydrothermal: Synthesis, characterization and photoluminescence at room temperature
Author(s): 
Institution: 
  • Universidade Federal de São Carlos (UFSCar)
  • Universidade Estadual Paulista (UNESP)
ISSN: 
0022-3697
Sponsorship: 
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
  • Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
  • UFPB
Abstract: 
In this paper, BaMoO(4) powders were prepared by the coprecipitation method and processed ill a domestic microwave-hydrothermal. The obtained powders were characterized by X-ray diffraction (XRD), Fourier transform Raman (FT-Raman) spectroscopy, ultraviolet-visible (UV-vis) absorption spectroscopy and photoluminescence (PL) measurements. The morphology of these powders were investigated by scanning electron microscopy (SEM). SEM micrographs showed that the BaMoO(4) powders present a polydisperse particle size distribution. XRD and FT-Raman analyses revealed that the BaMoO(4) powders are free of secondary phases and crystallize in a tetragonal structure. UV-vis was employed to determine the optical band gap of this material. PL measurements at room temperature exhibited a maximum emission around 542 nm (green emission) when excited with 488 run wavelength. This PL behavior was attributed to the existence of intrinsic distortions into the [MoO(4)] tetrahedron groups in the lattice. (C) 2008 Elsevier Ltd. All rights reserved.
Issue Date: 
1-Nov-2008
Citation: 
Journal of Physics and Chemistry of Solids. Oxford: Pergamon-Elsevier B.V. Ltd, v. 69, n. 11, p. 2674-2680, 2008.
Time Duration: 
2674-2680
Publisher: 
Pergamon-Elsevier B.V. Ltd
Keywords: 
  • Optical materials
  • Chemical synthesis
  • Electron microscopy
  • Luminescence
  • Optical properties
Source: 
http://dx.doi.org/10.1016/j.jpcs.2008.06.107
URI: 
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/42265
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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