alexa Visible light driven photocatalytic degradation of the reactive red-198, methylene blue and 3-chloro phenol by Nb2O5@Zno:Synthesis and characterization.
Materials Science

Materials Science

Research & Reviews: Journal of Material Sciences

Author(s): K Chennakesavulu, G Ramanjaneya Reddy, S Sanjeevi Prasath, S Supriya, S Sivanesan

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In-situ synthesis of ZnO and Nb2O5 composites was carried out in alkaline medium. The obtained composites were characterized by Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, diffuse reflectance UV-Vis spectrophotometer (DRS), Powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) surface area method, N2-sorption isotherms, Thermo gravimetric analysis (TGA), Particle size and Field emission scanning electron microscopy (FESEM/EDX). The synthesized composite was used as photocatalyst in the degradation of reactive red-198 (RR), methylene blue (MB) and 3-chloro phenol (3CP) under visible light irradiation. The catalytic activity and removal percentage of dye was determined by the spectrophotometric method, it indicates high percentage of degradation for the ZnO:Nb2O5 composite. The kinetic parameters were found to obey pseudo-first order oxidation reaction, which may be due to the fixed amount of the catalyst and concentration of the dye solution. The recycled and purified composites of ZnO:Nb2O5 was tested the catalytic activity and was compared with that of the fresh catalyst. Copyright © 2015 VBRI press.

This article was published in Adv Mater Lett and referenced in Research & Reviews: Journal of Material Sciences

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