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Abstract
The methods of removing various pollutants from water, due to the limitation of drinking water resources and also the increase in the production of pollutants from various industries, have been widely considered. A green technique that has emerged as a promising process in the degradation of numerous organic pollutants from water is the photocatalytic process. Here, Fe2O3-ZnO/rGO nanocomposites with 0.5, 1, 2 mass percentages of rGO nanosheets were successfully fabricated. These nanocomposites have been characterized by XRD analysis, FESEM, Raman spectroscopy and UV-vis spectrophotometer. Next, the photocatalytic activity of Fe2O3-ZnO/rGO nanocomposites in removing RhB dye was studied. Fe2O3-ZnO/1% rGO nanocomposite showed the best photocatalytic performance with a degradation percentage of 100% in 180 min with a rate constant of 0.020 min−1 and a half-life of 34.7 min. Finally, this optimal photocatalytic activity was attributed to the smaller optical gap of this nanocomposite.
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