Abstract
Scarcity of both quality and quantity of water has become a burning problem all over the world. Pollution by dyes constitutes a major portion. Advanced oxidation processes have been developed as green chemical technology to combat against water pollution. Graphene oxide is a miracle material with 2D honeycomb structure, which is also known for enhancement of photocatalytic activity of different semiconductors. In this paper, reduced graphene oxide with a combination of copper sulphide (rGO-CuS composite) is used to remove crystal violet photocalatytically from waste water. The photocatalytic performance of rGO/CuS composite and CuS was evaluated by using a model system of crystal violet. Optimum conditions obtained for photocatalytic degradation of crystal violet are: pH = 5.0, [Crystal Violet] = 3.40 × 10<sup>-5</sup> M, amount of composite = 0.12 g and light intensity = 50.0 mWcm<sup>-2</sup>. It was observed that composite showed good photocatalytic activity as compared to individual CuS (48.1% increase) and rGO (32.8% increase).<div><br></div>
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