This paper presents experiments of heterogeneous photocatalysis of methylene blue and 4-chlorophenol using gamma-irradiated TiO2 with a gamma source of 60Co at different doses. Methylene blue and 4-chlorophenol concentration after photo degradation were measured by UV spectrophotometry. More organic degradation was found using the irradiated catalyst than the non-irradiated catalyst, but a desorption process was noted in samples irradiated at the lower doses.
JAIME JIMÉNEZ-BECERRIL, ALMA MARTÍNEZ-HERNÁNDEZ, FRANCISCO GRANADOS-CORREA AND ROSA E. ZAVALA ARCE
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