Green synthesis of reduced graphene oxide supported TiO2/Co3O4 nanocomposite for photocatalytic degradation of methylene blue and crystal violet |
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| Affiliation: | 1. Department of Physics, Periyar University, Salem 636011, Tamil Nadu, India;2. Center for Materials Science and Nano Devices, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Kancheepuram 603203, Tamil Nadu, India;3. Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-Ku, Hamamatsu, Shizuoka 432-8011, Japan;4. Nanotechnology Research Center (NRC), Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, Tamil Nadu, India;5. Department of Energy Studies, Periyar University, Salem 636011, Tamil Nadu, India;6. Department of Physics, Shri Sakthikailassh Women''s College, Salem 636003, Tamil Nadu, India |
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| Abstract: | The hybrid rGO-TiO2/Co3O4 nanocomposite was successfully synthesized through co-precipitation method. The structural, morphological, compositional and optical properties of the as synthesized nanocomposite were characterized by X-ray diffraction (XRD), Field Emission scanning electron microscopy (FESEM), energy dispersive X-Ray Spectroscopy (EDS), Fourier transformation infrared spectroscopy (FTIR), UV–visible spectrophotometer (UV–vis) and photoluminescence (PL). XRD, EDS and FTIR confirms the existence of rGO-TiO2/Co3O4 in the prepared nanocomposite. FESEM confirms that the TiO2/Co3O4 nanocomposite are adsorbed on the surface of the rGO. UV–Vis and PL spectra revealed that the absorbance and emission occurred at visible region, which greatly supports the photocatalytic dye degradation through the electron-hole separation. The percentage decolorization of methylene blue dye solution was higher with lesser time compared to crystal violet dye. This result concludes that the commercialization of rGO/TiO2/Co3O catalyst may useful for treating various dyes in industries. |
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| Keywords: | Methylene blue Crystal violet Environmental pollutant Co-precipitation Photocatalytic degradation |
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