A novel solution method for selective synthesis of pure t-LaVO4

Tetragonal phase LaVO4 (t-LaVO4) was successfully selectively synthesized through a simple solution method with La(NO3)3 and NaVO4 as starting materials without any templates or catalysts. The products were characterized by X-ray powder diffraction (XRD) and transmission electron microscopy (TEM). X...

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Bibliographic Details
Published in:Materials letters 2011-01, Vol.65 (2), p.240-243
Main Authors: Xie, Baogeng, Lu, Guanzhong, Wang, Yanqin, Guo, Yun, Guo, Yanglong
Format: Article
Language:English
Subjects:
Aspect ratio
Diffraction
Luminescence
Materials selection
Nanorods
Synthesis
Transmission electron microscopy
X-rays
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Summary:Tetragonal phase LaVO4 (t-LaVO4) was successfully selectively synthesized through a simple solution method with La(NO3)3 and NaVO4 as starting materials without any templates or catalysts. The products were characterized by X-ray powder diffraction (XRD) and transmission electron microscopy (TEM). XRD patterns showed that pure t-LaVO4 could be obtained in wide ranges of pH value and crystallization temperature. TEM images revealed that nanorods with different aspect ratios were obtained in different synthesis conditions. The shorter nanorods had mean diameters of about 18-25nm and lengths of 40-60nm. However, the longer nanorods had uniform sizes with an average aspect ratio about 10. It was interesting to discover that t-LaVO4 could be formed even at room temperature (RT), which might be beneficial for a large scale production. Different luminescence performances of the samples doped 5% Eu3+ were also investigated.
ISSN:0167-577X
DOI:10.1016/j.matlet.2010.09.079