UV-Induced Photodegradation of 2,4,6-Trichlorophenol Using Ag-Fe2O3-CeO2 Photocatalysts

被引：15
|
作者：
Karimipour, Zohreh [1 ]
Jalilzadeh Yengejeh, Reza [1 ]
Haghighatzadeh, Azadeh [2 ]
Mohammadi, Mohammad Kazem [3 ]
Mohammadi Rouzbehani, Maryam [4 ]
机构：
[1] Islamic Azad Univ, Dept Environm Engn, Ahvaz Branch, Ahvaz, Iran
[2] Islamic Azad Univ, Dept Phys, Ahvaz Branch, Ahvaz, Iran
[3] Islamic Azad Univ, Dept Chem, Ahvaz Branch, Ahvaz, Iran
[4] Islamic Azad Univ, Dept Environm, Ahvaz Branch, Ahvaz, Iran
来源：
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS | 2021年 / 31卷 / 03期
关键词：
Ag– Fe2O3– CeO2; Photocatalyst; Co-precipitation; 2; 4; 6-Trichlorophenol; DEGRADATION; PERFORMANCE; ACID; DYE; ADSORPTION; REMOVAL;
D O I：
10.1007/s10904-020-01859-1
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
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 R-2 as the most suitable model.
引用
收藏
页码：1143 / 1152
页数：10
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