Degradation of Atrazine over a heterogeneous photo-Fenton process with iron modified MCM-41 materials

BENZAQUEN, T.B.; CUELLO, N.; ALFANO, O.M.; EIMER, G.

CATALYSIS TODAY

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2017

0920-5861

In this work,MCM-41 materials have been synthesized and modified with different metal loadings ofiron by the wet impregnation method. The different meso-structuresobtained were characterized by XRD, UVVIS-RD, ICP and TEM and their behaviorsas heterogeneous catalysts in the photo-Fenton reaction were studied. Thus,ironcontaining mesostructured materials have been successfully tested for theheterogeneous photo-Fenton degradation of atrazine aqueous solutions using UV?visirradiation at room temperature and close to neutral pH. In order to assess theeffectiveness ofthe herbicide degradation in the heterogeneous photo-Fenton process, and tocompare experimental results obtained, a study of the photonic efficiency is presented. Thephotonic efficiency ofAtrazine degradation was evaluated considering different experimentalconditions employed two factorial designs. The results showed that the ironmodified MCM-41with a nominal metal loading of 2.5 wt.% exhibited the highest activity.Consequently, the high performance of this material indicates that the heterogeneousvia of the photo-Fenton process can also be efficiently employed for thetreatment of simulated wastewater containing atrazine, thus presentingadvantages unlike the homogeneous process.