An Efficient and Enhanced Photo catalytic Activity of Zno Nano particles on Mineralization of Congo red Dye in Aqueous Medium
Journal Title: International Journal of Engineering and Science Invention - Year 2018, Vol 7, Issue 3
Abstract
ZnO microspheres were successfully synthesized by a wet chemical method. The structure and morphology of the samples were investigated by X-ray diffraction and Scanning electron microscopy. X-ray diffraction revealed the hexagonal structure of ZnO. Percentage of lattice contraction and average particle size of the sample were also calculated from the XRD. SEM micrographs showed the spherical shape of ZnO nanoparticles. The UV-VIS absorption spectra showed red shift in wavelength corresponding to bulk. Photo degradation of congo red were investigated using ZnO microspheres. Among all, ZnO synthesized at 45mM concentration of ammonia added showed excellent photocatalytic activity to dye, which can be attributed to the improved charge separation. Since this process does not require any oxidants and uses the solar and UV light, it can be developed as an economically feasible and environmentally friendly method to decolorize for the wastewater treatment under sunlight.
Authors and Affiliations
T. Jeyapaul, S. Harikengaram, A. Chellamani
Keywords
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