Photoluminescent Properties of CoMoO₄ Nanorods Quickly Synthesized and Annealed in a Domestic Microwave Oven

Ana P. de Moura, Larissa H. de Oliveira, Paula F. S. Pereira, Ieda L. V. Rosa, Máximo S. Li, Elson Longo, José A. Varela

Chemistry Department, Federal University of Sao Carlos, S?o Carlos, Brazil.
Chemistry Institute, University of Sao Paulo State, Araraquara, Brazil.
Physical Institute, University of Sao Paulo, S?o Carlos, Brazil.

DOI: 10.4236/aces.2012.24057                

Abstract

A simple way to prepare α- and β-CoMoO₄ nanorods is reported in this paper. CoMoO₄xH₂O nanorod precursors were obtained using the microwave-assisted hydrothermal (MAH) method. By annealing the as-prepared CoMoO4₄xH₂O precursor at 600℃ for 10 min in a domestic microwave oven, α- and β-CoMoO₄ nanorods were prepared. These powders were analyzed by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Fourier transform Raman microscopy and ultraviolet visible absorption spectroscopy (UV-vis spectra) as well as photoluminescence (PL) measurements. Based on the results, these materials revealed nanorod morphology. PL spectra obtained at room temperature for α- and β-CoMoO₄ particles exhibited maximum components around the blue light emission. The results show that the domestic microwave oven has been successfully employed to obtain α- and β-CoMoO₄ nanoparticles.

Keywords

Photoluminescence; Nanorods; Molybdates; Microwave-Hydrothermal Method

Conflicts of Interest

The authors declare no conflicts of interest.

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