UV-Induced Photodegradation of 2,4,6-Trichlorophenol Using Ag–Fe2O3–CeO2 Photocatalysts
| Autor: | Reza Jalilzadeh Yengejeh, Azadeh Haghighatzadeh, Zohreh Karimipour, Mohammad Kazem Mohammadi, Maryam Mohammadi Rouzbehani |
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| Rok vydání: | 2021 |
| Předmět: |
Langmuir
Materials science Polymers and Plastics Langmuir adsorption model 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis Chemical kinetics symbols.namesake chemistry.chemical_compound chemistry 2 4 6-Trichlorophenol Materials Chemistry symbols Photocatalysis Freundlich equation 0210 nano-technology Photodegradation Nuclear chemistry |
| Zdroj: | Journal of Inorganic and Organometallic Polymers and Materials. 31:1143-1152 |
| ISSN: | 1574-1451 1574-1443 |
| DOI: | 10.1007/s10904-020-01859-1 |
| Popis: | The present study described the preparation of Ag–Fe2O3–CeO2 nanoparticles via a simple co-precipitation route. The structural studies were performed using X-ray diffraction (XRD), field emission scanning electron microscope (FESEM) and energy dispersive X-ray spectroscopy (EDX). The photocatalytic studies were carried out via the photodegradation of 2,4,6-trichlorophenol under UV light irradiation. The photodegradation of 2,4,6-trichlorophenol was investigated by varying pH, irradiation time, initial 2,4,6-trichlorophenol concentration and catalyst dose. The photocatalytic process kinetics were described using Langmuir–Hinshelwood model, indicating the second-order reaction kinetics as the best model for 2,4,6-trichlorophenol photodegradation. Ag–Fe2O3–CeO2 photocatalyst showed the highest photocatalytic degradation rate, in which the degradation order followed a trend as Ag–Fe2O3–CeO2 (80.70%) > Fe2O3-CeO2 (52.80%) > Fe2O3 (32.18%) > CeO2 (34.04%). The adsorption equilibrium isotherms were investigated using Langmuir and Freundlich models, suggesting Langmuir isotherm with higher R2 as the most suitable model. |
| Databáze: | OpenAIRE |
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