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http://acervodigital.unesp.br/handle/11449/42265
- Title:
- BaMoO(4) powders processed in domestic microwave-hydrothermal: Synthesis, characterization and photoluminescence at room temperature
- Universidade Federal de São Carlos (UFSCar)
- Universidade Estadual Paulista (UNESP)
- 0022-3697
- 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
- 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.
- 1-Nov-2008
- Journal of Physics and Chemistry of Solids. Oxford: Pergamon-Elsevier B.V. Ltd, v. 69, n. 11, p. 2674-2680, 2008.
- 2674-2680
- Pergamon-Elsevier B.V. Ltd
- Optical materials
- Chemical synthesis
- Electron microscopy
- Luminescence
- Optical properties
- http://dx.doi.org/10.1016/j.jpcs.2008.06.107
- Acesso restrito
- outro
- http://repositorio.unesp.br/handle/11449/42265
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