Magnetic nano-sized cadmium ferrite as an efficient catalyst for the degradation of Congo red in the presence of microwave irradiation
作者： Wen Shi , Xueyan Liu , Tingting Zhang , Qiong Wang , Lei Zhang
DOI: 10.1039/C5RA07591B
关键词: Chemical kinetics 、 Ferrite (magnet) 、 Specific surface area 、 Catalysis 、 Congo red 、 Chemistry 、 Diffuse reflectance infrared fourier transform 、 Radical 、 Nuclear chemistry 、 Analytical chemistry 、 Ion chromatography
摘要: A highly active nano-sized CdFe2O4 catalyst was prepared by a hydrothermal process and characterized X-ray diffraction (XRD), scanning electronic microscopy (SEM), BET specific surface area method, vibrating sample magnetometer (VSM) at room temperature. Application of the microwave-induced catalytic degradation method in abatement Congo red (CR) using magnetic studied. The ratio CR with reached 94.4% 10 min microwave irradiation (MW), proving to be an excellent catalyst. intermediate products from were investigated UV-Vis, HPLC ion chromatography. reaction kinetics, effects different species (SO42−, NO3−, HCO3−, CH3COO−), pH solution, dye initial concentration, dosage catalyst, as well mechanism comprehensively Radical trapping studies fluorescence technique revealed holes (h+) hydroxyl radicals (˙OH) involved main reaction. band structure analyzed UV-Vis diffuse reflectance spectroscopy Mott–Schottky measurements. discussed detail. This work can provide effective technology for wastewater treatment.
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