Solventless synthesis of m-LaVO4 photocatalyst for the degradation of methylene blue and textile effluent
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Lanthanum vanadate (LaVO4) nanoplates with monoclinic (m) phase were synthesized by a facile solventless method. Lanthanum nitrate and ammonium metavanadate was used as precursors in this method. X-ray diffraction pattern reveals the monoclinic phase of LaVO4 (m-LaVO4). In addition, average grain size and lattice parameters were also calculated. Fourier transform infrared (FT-IR) analysis confirms the presence of La–O and V–O bonds in the sample. Optical property of m-LaVO4 nanoplates was estimated by DRS UV–visible and photoluminescence spectroscopy. HR-TEM (high resolution-transmission electron microscopy) analysis predicts the formation of LaVO4 nanoplates. Furthermore, m-LaVO4 nanoparticles were utilized as photocatalyst for the photodegradation of methylene blue (MB) dye under visible light illumination. m-LaVO4 photocatalyst showed substantial efficiency for the photodegradation of textile effluent (TE) within 120 min of visible light irradiation.
KeywordsMethylene Blue Photocatalytic Activity Photocatalytic Degradation Visible Light Irradiation NH4VO3
V. Sivakumar wishes to thank Orchid chemicals and pharmaceuticals limited, Chennai for providing XRD, FTIR and UV–visible spectroscopic facility. The authors acknowledge the SEM and HR-TEM facility provided by the National Centre for Nanoscience and Nanotechnology, University of Madras, Tamil Nadu, India.
- 24.X. Lin, L.L. Yu, L.N. Yan, Q.F. Guan, Y.S. Yan, H. Zhao, Acta Phys. Chim. Sin. 29, 1771 (2013)Google Scholar