Synergistic Effect of Samarium doped Magnesium Zirconate Photocatalyst for the Degradation of Methylene Blue Dye via Efficient Charge Separation Pathway and its Photoluminescence Studies
Keywords:
Synergistic Effect, Photocatalysis, Degradation of Methylene Blue, Charge separation, Photoluminescence.Abstract
In the present work, a well defined Samarium doped Magnesium Zirconate (MgZrO3:Sm3+) nanospheres were synthesized by facile solution combustion method. The prepared material was characterized by FTIR, PL and SEM. FTIR spectra showed broad peaks within 500 cm-1 indicating the presence of metal oxygen bonds. From the UV-Vis DRS results the band gap of MgZrO3:Sm3+ nanomaterials were evaluated and it is observed that, band gap decreases with the increase in concentration of Sm3+ and it was in the range of 5.89 eV-7.17 eV. From the SEM micrographs of the material with different concentration of Sm3+ it was evident that, in all the samples the particles are agglomerated and showed defined spherical morphology. The Photoluminescence studies of the material showed five bands at 360 nm, 397 nm, 442 nm, 487 nm and 535 nm, upon excitation at 290 nm. A detailed investigation on effect of Sm+3 on the PL intensity were studied and photocatalytic activity for the degradation of methylene blue was evaluated.
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