HYDROTHERMAL SYNTHESIS OF YTTRIUM ORTHOVANADATE (YVO۴) AND ITS APPLICATION IN PHOTO CATALYTIC DEGRADATION OFSEWAGE WATER

Abstract: (Y۲O۳) and ethyl acetate as a mineralizer by hydrothermal method at a low temperature (T=.۲۳۰°C, andP=۱۰۰bars).The as-prepared powders were characterized by X-ray Diffraction (XRD), Fourier Transform InfraredSpectroscopy (FTIR), Scanning Electron Microscopy (SEM), UV-V Spectroscopy and Chemical Oxygen Demand(COD) of the sewage water, respectively. The results show that hydrothermal method can greatly promote thecrystallization and growth of YVO۴ phase. XRD pattern clearly indicates the tetragonal structure and crystallanity. AnFTIR spectrum of the YVO۴ shows the presence of Y-O and V-O bond, respectively. The presence of these two peaksindicates that yttrum vanadate has been formed. UV-V is absorption spectra suggesting that YVO۴ particles havestronger UV absorption than natural sunlight and subsequent photocatalytic degradation data also confirmed theirhigher photocatalytic activity.In this paper, YVO۴ powder was successfully synthesized from Vanadium Pentaoxide (V۲O۵), Yttrium Oxide