Green synthesis of reduced graphene oxide supported TiO2/Co3O4 nanocomposite for photocatalytic degradation of methylene blue and crystal violet. Issue 10 (July 2019)

• Record Type: Journal Article
• Authors: Ranjith, R.; Renganathan, Vengudusamy; Chen, Shen-Ming; Selvan, N. Senthamizh; Rajam, P. Shameela
• Is Part Of: Ceramics international. Volume 45:Issue 10(2019)
• Page Start: 12926
• Page End: 12933
• Publication Date: 2019-07
• Subjects: rGO-TiO2/Co3O4 -- Methylene blue -- Crystal violet -- Environmental pollutant -- Co-precipitation -- Photocatalytic degradation; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2019.03.219
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The hybrid rGO-TiO2 /Co3 O4 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 /Co3 O4 in the prepared nanocomposite. FESEM confirms that the TiO2 /Co3 O4 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 /Co3 O catalyst may useful for treating various dyes in industries.