Magnetic Fe3O4/carbon sphere/cobalt composites for catalytic oxidation of phenol solutions with sulfate radicals

被引：164
作者：
Wang, Yuxian
Sun, Hongqi [1 ]
Ang, Ha Ming
Tade, Moses O.
Wang, Shaobin
机构：
[1] Curtin Univ, Dept Chem Engn, Perth, WA 6845, Australia
来源：
CHEMICAL ENGINEERING JOURNAL | 2014年 / 245卷
关键词：
Cobalt catalyst; Sulfate radicals; Magnetic separation; Phenol; Wastewater; SUPPORTED COBALT CATALYSTS; OZONE WATER-TREATMENT; HETEROGENEOUS ACTIVATION; WASTE-WATER; ORANGE-II; ORGANIC CONTAMINANTS; OXONE/CO2+ REAGENT; AQUEOUS-SOLUTION; FACILE SYNTHESIS; NANOPARTICLES;
D O I：
10.1016/j.cej.2014.02.013
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Magnetic carbon nanospheres (Fe3O4/CS core/shell) and their supported Co3O4 nanoparticles were synthesized using a novel one-step hydrothermal method followed by heat treatment. The nanocomposites were characterized by powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and N-2 sorption isotherms. The catalytic properties of the nanocomposites in activating Oxone (R) for oxidation of phenol solution were investigated. Fe3O4/CS supported Co3O4 nanoparticles exhibited high activity in Oxone (R) activation for phenol degradation with 100% conversion within 30 min. Phenol degradation was found to follow the first order kinetics. The nanoparticles also displayed good water dispersion and magnetic separation under the magnetic field. The deactivation of catalysts was investigated and their regeneration was also proposed. (C) 2014 Elsevier B.V. All rights reserved.
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页码：1 / 9
页数：9
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