BaMoO4 powders processed in domestic microwave-hydrothermal: Synthesis, characterization and photoluminescence at room temperature

被引：110

作者：

Cavalcante, L. S. ^{[1
]}

Sczancoski, J. C. ^{[1
]}

Tranquilin, R. L. ^{[1
]}

Joya, M. R. ^{[1
]}

Pizani, P. S. ^{[1
]}

Varela, J. A. ^{[2
]}

Longo, E. ^{[2
]}

机构：

[1] LIEC UFSCar, Dept Quim & Fis, BR-13565905 Sao Carlos, SP, Brazil

[2] UNESP, LIEC, Inst Quim, BR-14801970 Araraquara, SP, Brazil

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2008年 / 69卷 / 11期

基金：

巴西圣保罗研究基金会;

关键词：

Optical materials; Chemical synthesis; Electron microscopy; Luminescence; Optical properties;

D O I：

10.1016/j.jpcs.2008.06.107

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper, BaMoO4 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 BaMoO4 powders present a polydisperse particle size distribution. XRD and FT-Raman analyses revealed that the BaMoO4 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 [MoO4] tetrahedron groups in the lattice. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：2674 / 2680

页数：7

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