期刊
COMPTES RENDUS CHIMIE
卷 18, 期 10, 页码 1161-1169出版社
ACAD SCIENCES
DOI: 10.1016/j.crci.2015.08.004
关键词
Cu-pillared clay; Heterogeneous catalysis; Photo-Fenton; Water treatment; Advanced oxidation processes
A Cu-doped Fe-pillared Tunisian clay (Cu/Fe PILC) was synthesized and used as a catalyst in the heterogeneous photo-Fenton oxidation of phenol in aqueous solution. Textural, structural and chemical characterization pointed to successful pillaring and incorporation of the Cu active phase. Photo-Fenton experiments proved the high activity of the Cu/Fe PILC catalyst, which was able to completely mineralize the phenol present in the treated solution after a reaction time of 40 min and in the presence of UV-C light. Moreover, the catalytic activity was not influenced by the pH of the initial phenol solution, over a wide range of pH from 3 to 7. An optimal dosage of H2O2 and of the catalyst was found. Phenol degradation was found to be slower in the presence of UV-A irradiation, needing longer reaction times. Negligible metal leaching and catalyst reutilization without noticeable loss of activity point to an excellent catalytic stability for this Cu/Fe PILC catalyst. (C) 2015 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
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