Synthesis, characterization and spectroscopic properties of Nd2(MoO4)3 microflowers
Carregando...
Data
Data de publicação
2016
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
É parte de
BRAZILIAN MEETING ON INORGANIC CHEMISTRY, 18th
Exportar
Resumo
Rare earth (RE) ion doped phosphors have attracted great interest during the past several
decades due to their unique physical and chemical properties. RE ions can display many
meaningful properties in optics, electronics, and magnetics, originating from f-f electronic
transitions within the 4f shell. Among these RE ions, the Nd3+ ion is an important activator that
can emit in the near infrared, corresponding to the transition, while located in a noncentrosymmetric
site. Molybdates are important inorganic compounds and display some
excellent performance in the field of lasers, phosphors and ionic conductors. Thus, many
materials doped with Nd3+ can be used as infrared emitting phosphors and have potential
application like diagnostic, biomarker, image, therapy, etc.
Neodimium compound Nd2(MoO4)3 nanoparticles was prepared by co-precipitation route
using a dispersor to control the particle shape and size. X-ray diffraction (XRD),scaning
eletronic microscopy (SEM), transmission electron microscopy (TEM) and photoluminescence
spectra (PL were applied to characterize the obtained samples. The XRD patterns reveal that as
prepared sample is assigned to the scheelite-type tetragonal structure and this extructure change
with the thermal treatment to a monoclinic phase. In addition, the as-synthesized Nd2(MoO4)3
particles are high purity well crystallized and with the crystalite size aproximately 21 nm. The
possible formation process of Nd2(MoO4)3 nanoparticles have been discussed as well. Upon
excitation by ultraviolet radiation, the as-synthesized Nd2(MoO4)3 nanoparticles exhibit the
characteristic emission lines corresponding to Nd3+
ion spectra. It was observed the change in
the structure with thermal treatment in the emission spectra. The luminescence spectra show
the characteristic narrow bands assigned to 4f–4f transitions from the emitting 4 F3/2 level to the
4 I9/2 and, 4 I11/2 levels, centered around 915 and 1060 respectively.
Como referenciar
FELINTO, M.C.F.C.; DIAS, C.L.; NAKAMURA, L.K.O.; BARBOSA, H.P.; RODRIGUES, L.C.; BRITO, H.F.; MALTA, O.M.L.; TEOTONIO, E.E.S. Synthesis, characterization and spectroscopic properties of Nd2(MoO4)3 microflowers. In: BRAZILIAN MEETING ON INORGANIC CHEMISTRY, 18th, September 25-30, 2016, São Pedro, SP. Abstract... Disponível em: http://repositorio.ipen.br/handle/123456789/27436. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.