Degradation of 4-Chlorophenol by Gamma Radiation of 137Cs and X-rays


  • Julio César González-Juárez Instituto Tecnológico de Toluca
  • Jaime Jiménez-Becerril Instituto Nacional de Investigaciones Nucleares
  • Jesús Cejudo-Álvarez Instituto Nacional de Investigaciones Nucleares



Radiocatalysis, Photocatalysis, Radiation Induced Catalysis, 4-Chlorophenol.


This paper presents results of radiolytic degradation of 4-chlorophenol in the presence of TiO2, Al2O3, y SiO2, using different radiation sources than 60Co, which is so common in this type of experiment. The radiation sources used were X-rays with energy of 100 keV and radiation from 137Cs (662 keV). After irradiation with a dose of 50 cGy X-ray and TiO2 obtained a degradation of about 5%, no degradation was obtained with 137Cs source and other oxides. This may be due to the fact that X-rays have a linear energy transfer (LET) greater value, and in the case of TiO2 present a crystalline structure, whereas the other two oxides are amorphous. Both characteristics result in better formation of a reactive species that allows the degradation of the compound.


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