| Fe2O3-graphene anchored Ag nanocomposite catalyst for enhanced sonocatalytic degradation of methylene blue |
| Amnuay Noypha1, Yonrapach Areerob2, Saksit Chanthai3, Prawit Nuengmatcha1,4 |
1Creative Innovation in Science and Technology, Faculty of Science and Technology, Nakhon Si Thammarat Rajabhat University, Nakhon Si Thammarat 80280, Thailand
2Department of Industrial Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand
3Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
4Nanomaterials Chemistry Research Unit, Department of Chemistry, Faculty of Science and Technology, Nakhon Si Thammarat Rajabhat University, Nakhon Si Thammarat 80280, Thailand |
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Received: August 10, 2020; Revised: October 20, 2020 Accepted: October 28, 2020. Published online: May 31, 2021. |
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| ABSTRACT |
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In the present research work, Fe2O3-graphene-Ag (FGA) was synthesized by a simple hydrothermal method. The sonocatalytic activity of the FGA particles was evaluated by the degradation of methylene blue (MB) under ultrasonic irradiation, revealing their good sonocatalytic activity. The eff ects of various experimental factors, such as dosage, time, and ultrasonic frequencies on the sonocatalytic efficiency were investigated; a significant influence of different factors on the sonocatalytic degradation of MB was observed, whereas the best degradation conditions were obtained when ultrasonic irradiation was performed for 90 min at room temperature considering MB concentration = 0.5 g L−1, Ccatalyts = 1 g L−1, and pH 6.5. Moreover, the sonocatalytic activity of the FGA was compared to that of Fe2O3 (F), graphene (G), and Fe2O3-graphene (FG). As a result, the FGA was found to exhibit higher sonocatalytic activity than other catalysts (FGA > FG > G > F), which evidenced the practical utility of the synthesized FGA as a highly effective catalyst for the removal of dye pollutants. Finally, the plausible sonocatalytic mechanism of FGA is also discussed in this work. |
| Key words:
Sonocatalytic degradation · Graphene · Catalyst · Fe2O3 |
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