Fenton-like Degradation of Phenol Catalyzed by a Series of Fe-Containing Mixed Oxides Systems

2nd International Conference on Advanced Materials

Alhmoud, T.T.^1 ; Mahmoud, S.S.^1 ; Hammoudeh, A.Y.^1

Chemistry Department, Yarmouk University, Irbid, Jordan^1

关键词: Advanced Oxidation Processes;    Catalytic efficiencies;    Degradation of phenols;    Fenton reactions;    Fenton-like reactions;    First order kinetics;    Mixed oxide systems;    Sol-gel auto-combustion;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/305/1/012018/pdf
DOI  :  10.1088/1757-899X/305/1/012018

来源: IOP

【 摘 要 】

In our attempts to develop a solid catalyst to degrade organic pollutants in wastewater via the Fenton-like reaction, six Fe-containing mixed oxide systems were prepared by means of the sol-gel auto-combustion method to have the following stoichiometries: CuFe1.2O2.8, BaFe7.2O11.8, BaFe7.2Cu2O13.8, BaFe5.4V3O16.6, BaFe4.8Cu2V3O17.7and Ag2Fe5.4V3O16.6. The prepared systems were thermally treated at 550°C, 650°C, 800°C and 1100°C, and then characterized by XRD to identify the present phases. The systems were tested with respect to their catalytic efficiency in the degradation of phenol (200 ppm) in water where CuFe1.2O2.8was found to be the most reactive one (80% removal in 60 min). It showed thereby first-order kinetics and an enhanced behavior under irradiation with a 30-W LED light source. The positive role of irradiation was most obvious in the case of Ag2Fe5.4V3O16.6in which almost complete conversion was achieved in 120 min compared to only 45% in the same period but without irradiation. However, increasing the temperature at which thermal treatment is performed was found to suppress the catalytic activity of the system. Due to their high efficiency and rather low leaching rates of constituents, CuFe1.2O2.8or Ag2Fe5.4V3O16.6seem to be very promising in the Fenton-like degradation of organic pollutants.