Fe3+/Iron Oxide/SiO2 Xerogel Catalysts for p-nitrophenol Degradation by Photo-Fenton Effects: Influence of Thermal Treatment on Catalysts Texture

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

doi:10.1016/j.matpr.2016.01.043

Fe³⁺/Iron Oxide/SiO₂ Xerogel Catalysts for p-nitrophenol Degradation by Photo-Fenton Effects: Influence of Thermal Treatment on Catalysts Texture

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

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

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.

Original language	English
Pages (from-to)	464-469
Number of pages	6
Journal	Materials Today: Proceedings
Volume	3
Issue number	2
DOIs	https://doi.org/10.1016/j.matpr.2016.01.043
State	Published - 2016
Externally published	Yes

Funding

S. D. L. thanks to the Belgian National Funds for Scientific Research (F.R.S.-FNRS) for her Associate Researcher position. The authors are grateful to the Ministère de la Région Wallonne Direction Générale des Technologies, de la Recherche et de l’Energie, the Fonds de Recherche Fondamentale Collective and the Belgian National Funds for Scientific Research (F.R.S.-FNRS). The authors thank Marjorie Lismont for her involvement and her remarks.

Funders	Funder number
Fonds De La Recherche Scientifique - FNRS
Direction Générale de la Compétitivité, de l’Industrie et des Services

Keywords

Catalysts texture
Cogelled xerogel
P-nitrophenol degradation
Photo-Fenton effect
Sol-gel process
Thermal treatments

Access to Document

10.1016/j.matpr.2016.01.043

Cite this

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title = "Fe3+/Iron Oxide/SiO2 Xerogel Catalysts for p-nitrophenol Degradation by Photo-Fenton Effects: Influence of Thermal Treatment on Catalysts Texture",

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 M{\"o}ssbauer 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. M{\"o}ssbauer and catalytic tests are presented in another paper.",

keywords = "Catalysts texture, Cogelled xerogel, P-nitrophenol degradation, Photo-Fenton effect, Sol-gel process, Thermal treatments",

author = "Mahy, {Julien G.} and Ludivine Tasseroul and Marcus Herlitschke and Hermann, {Raphael P.} and Lambert, {St{\'e}phanie D.}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd.",

year = "2016",

doi = "10.1016/j.matpr.2016.01.043",

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AU - Mahy, Julien G.

AU - Tasseroul, Ludivine

AU - Herlitschke, Marcus

AU - Hermann, Raphael P.

AU - Lambert, Stéphanie D.

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N2 - 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.

AB - 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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