Synthesis of Nickel Oxide / Cerium Dioxide/ Graphene Oxide (NiO/CeO₂/GO) Composite as an Organic Pollutant Remover of Dyes
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Nanocomposites, Dyes, Methylene blue (MB), Organic Pollutant, Graphene, Hydrothermal Technique
Abstract
Before industrial effluents are released into the environment, several techniques have been developed to remove colours from them. These techniques include ion exchange, photocatalytic degradation, chemical oxidation, adsorption, and osmosis. Since these dyes may be totally broken down by photo-catalytically active semiconductors when exposed to light, photocatalysis is one of these approaches that is thought to be environmentally friendly and has been widely employed for environmental cleanup In the current study, a hydrothermal approach was used to create a NiO/CeO₂/GO nanocomposite that was heated for 24 hours at 180 °C using a Teflon liner. To confirm the creation of nanocomposite material, the synthesised nanomaterials were characterised using a variety of spectroscopic methods, including XRD, FTIR, Raman Spectroscopy (RS), SEM, Photo Luminescence Spectra (PL), and Dynamic Light Scattering (DLS). The materials that were synthesised were investigated as photocatalysts for the breakdown of Methylene Blue (MB) dye when exposed to sunlight. The product's photocatalytic activity on methylene blue was examined. It has been demonstrated that adding GO increases absorption while lowering bandgap energy. The elimination effectiveness of methylene blue from an aqueous solution was investigated, and it was found to be 93.22% when the ideal circumstances of NiO/CeO₂/GO of 0.10 mg/L, pH 5, and contact duration of 40 min under visible light were used.
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