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Preparation of LaVO4 by Microwave Process and its Photocatalytic Activity

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Abstract:

Using La (NO3)3·6H2O, NH4VO3, citric acid as the main raw materials, nanocrystalline LaVO4 sample was prepared by microwave method. The structure and morphology of sample were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-visible diffuse reflectance spectroscopy (DRS) and Fourier Transform Infrared (FT-IR) spectroscopy. The photocatalytic activity of LaVO4 was studied for methyl orange (MO) used as simulated sewage. The XRD and SEM showed that the particle size of LaVO4 was about 80-100 nm. The DRS showed that LaVO4 had optical absorption onset of 356 nm, indicating the optical band gap of 3.48 eV. The FT-IR showed that LaVO4 had vibration peaks of Fe-O and V-O bond. Under UV-light, the photocatalytic experiment indicated that the prepared LaVO4 nanocrystalline had highly photocatalytic activity for degradation of methyl orange.

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Periodical:

Materials Science Forum (Volume 852)

Pages:

538-541

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.852.538

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Online since:

April 2016

Authors:

Shu Yu Zhong, Hai Shao Ye, Ji Qi Jiang, Qian Yang, Pei Song Tang

Keywords:

LaVO4, Microwave Method, Photocatalysis

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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