Abstract
Iron-containing SBA15 catalysts have been prepared following different synthesisroutes, direct synthesis by adjusting pH at 3 and 6 and with post synthesis procedure. Activity and stability of these materials were assessed on the photo-Fenton degradation of phenolic aqueous solutions by H2O2 using near UV irradiation (254 nm) at room temperature and initial neutral pH. Their catalytic performance was mentioned in terms of phenol and total organic carbon (TOC) conversions. Several complementary techniques, including XRD, Nitrogen sorption isotherms, UV visible, were used to evaluate the final structural and textural properties of calcined Fe-SBA15 materials. These materials show a high activity and stability of iron species.
Highlights
Aromatic compounds are common pollutants in the effluents of several industries
The results show that mineralization of phenol towards carbon dioxide and water by irradiated homogeneous Fenton catalytic systems and UV/H2O2 processes may occur along with heterogeneously Fenton photo-assisted reactions, but the remarkable contribution of iron containing SBA-15 catalyst is undoubtedly demonstrated
Fe-SBA15 prepared by direct synthesis are not as highly ordered as impregnated materials Fe/SBA-15
Summary
Aromatic compounds are common pollutants in the effluents of several industries. The degradation of these pollutants in wastewater streams has emerged as an important concern during last decade. Species, promoting an additional generation of OH radicals in solution [2]: Fe (OH)2+ + hν → Fe2+ + HO
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