Fe$^{3+}$/Iron Oxide/SiO$_{2}$ Xerogel Catalysts for p-nitrophenol Degradation by Photo-Fenton Effects: Influence of Thermal Treatment on Catalysts Texture

Mahy, Julien G.; Herlitschke, Marcus; Tasseroul, Ludivine; Hermann, Raphael; Lambert, Stéphanie D.

doi:10.1016/j.matpr.2016.01.043

Journal Article

FZJ-2016-01952

Fe$^{3+}$/Iron Oxide/SiO$_{2}$ Xerogel Catalysts for p-nitrophenol Degradation by Photo-Fenton Effects: Influence of Thermal Treatment on Catalysts Texture

Mahy, J. G. (Corresponding author) ; Tasseroul, L. ; Herlitschke, M. ; Lambert, S. D. ; Hermann, R.FZJ*

2016
Elsevier Amsterdam [u.a.]

Materials today / Proceedings 3(2), 464 - 469 (2016) [10.1016/j.matpr.2016.01.043]

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Please use a persistent id in citations: doi:10.1016/j.matpr.2016.01.043

Abstract: Three iron xerogel catalysts were synthesized by hydrolysis and condensation of tetraethoxysilane (TEOS) and 3-(2-aminoethylamino)propyltrimethoxysilane (EDAS) which is able to form a chelate with iron ions. Four thermal treatments were applied to catalysts: drying, drying-autoclaving, calcination and calcination-autoclaving. Textural characterizations show that the specific surface area is increased by calcination while materials microporosity completely collapse when using autoclaving. Based on Mössbauer spectroscopy and magnetometry measurements, only Fe3+ species were observed in xerogel catalysts. The photo-Fenton effect of these catalysts was evaluated on the degradation of p-nitrophenol in aqueous media. In the presence of H2O2, results show that this effect reachs 99% of degradation after 24 h. Mössbauer and catalytic tests are presented in another paper.

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