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Journal of Advances in Environmental Health Research، جلد ۹، شماره ۳، صفحات ۱۹۱-۲۰۰
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عنوان انگلیسی Photocatalytic Degradation of 2,4-Dichlorophenoxyacetic Acid Using Fe2O2/CeO2/Ag Composite Nanoparticles under Ultraviolet
چکیده انگلیسی مقاله Background: The herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) is used to control of agricultural pests (water and soil) and is among the most widely distributed pollutants in the environment.
Methods: In this study, Fe2O3/CeO2/Ag composite nanoparticles were synthesized using a simple coprecipitation method. The as-synthesized samples were examined using X-ray diffraction, field emission scanning electron microscopy, and X-ray analysis. The photo catalytic activity of the as-synthesized samples was examined through photo degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) under ultraviolet irradiation. The effects of pH, irradiation time, initial 2,4-D concentration and catalyst dose on the photo catalytic performance of Fe2O3/CeO2/Ag composite nanoparticles were investigated through an optimization process. The photo catalytic reaction kinetic data were analyzed using Langmuir-Hinshelwood model, and the absorption equilibrium was examined by Langmuir and Freundlich isotherm models.
Results: The results suggested the second order reaction kinetics as the best model for 2,4-D photo degradation. Moreover, Langmuir isotherm with a higher R2 was reported as the most suitable model. The photo catalytic activities revealed the highest photo degradation percentage for Fe2O3/CeO2/Ag composite nanoparticles with a degradation order as Fe2O3/CeO2/Ag (75.70%)>Fe2O3/CeO2 (36.28%) >CeO2 (26.92)>Fe2O3 (11.96).
Conclusions: Based on the determination of nanomaterial efficiency, its components and photo catalytic properties, can be used to remove this contaminant and other toxic compounds.
کلیدواژه‌های انگلیسی مقاله Fe2O3/CeO2/Ag,Photocatalytic performance,Isotherm models,2,4-dichlorophenoxyacetic
نویسندگان مقاله Zohreh Karimipour |
Department of Environmental Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.

Reza Jalilzadeh Yengejeh |
Department of Environmental Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.

Azadeh Haghighatzadeh |
Department of Physics, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.

Mohammad Kazem Mohammadi |
Department of Chemistry, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.

Maryam Mohammadi Roozbahani |
Department of the Environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.

نشانی اینترنتی https://jaehr.muk.ac.ir/article_133300_639915abe213e07b90af6038cd4f47a0.pdf
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