Visible Light Driven Photocatalytic Degradation Of The Reactive Red-198, Methylene Blue And 3-chloro Phenol By Nb2O5@Zno: Synthesis And Characterization
| Autor: | S. Sivanesan, G. Ramanjaneya Reddy, S. Supriya, K. Chennakesavulu, S. Sanjeevi Prasath |
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| Rok vydání: | 2015 |
| Předmět: |
Thermogravimetric analysis
Materials science Analytical chemistry Catalysis chemistry.chemical_compound symbols.namesake X-ray photoelectron spectroscopy chemistry Photocatalysis symbols General Materials Science Fourier transform infrared spectroscopy Raman spectroscopy Methylene blue Nuclear chemistry Visible spectrum |
| Zdroj: | Advanced Materials Letters. 6:518-526 |
| ISSN: | 0976-397X |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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