Article (Scientific journals)
Influence of nucleating agent addition on the textural and photo-Fenton properties of Fe(III)/SiO2 catalysts
Mahy, Julien; Hermans, Sophie; Tilkin, Rémi et al.
2020In Journal of Physics and Chemistry of Solids, 144, p. 109502
Peer Reviewed verified by ORBi
 

Files


Full Text
Mahy 2020 JPCS.pdf
Publisher postprint (1.34 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Sol–gel synthesis; Fe/SiO2 xerogels; modified silicon alkoxide; co-gelation method; photo-Fenton process
Abstract :
[en] Two Fe-based/SiO2 catalysts have been prepared by a sol–gel method, with or without co-gelation with a modified silicon alkoxide, 3-(2-aminoethylamino)propyltrimethoxysilane (EDAS). The aim was to compare these two materials and to study the influence of EDAS on the catalyst texture and photo-Fenton activity. Physico-chemical characterization showed that when EDAS was used, the iron was located inside the silica nanoparticles and was partially arranged in iron oxide clusters. As EDAS is a nucleating agent for silica, the reaction time was shorter in its presence, leading to larger silica nanoparticles. Studies of their behavior in aqueous media showed that the catalyst without EDAS released iron, whereas the catalyst with EDAS did not. This iron release influenced the photo-Fenton activities of the catalysts. p-Nitrophenol was degraded more rapidly with the catalyst without EDAS due to the greater availability of iron. Finally, both Fe/SiO2 catalysts displayed stable catalytic activity for 72 h of operation.
Disciplines :
Materials science & engineering
Chemical engineering
Author, co-author :
Mahy, Julien  ;  Université de Liège - ULiège > Department of Chemical Engineering > Nanomaterials, Catalysis, Electrochemistry
Hermans, Sophie
Tilkin, Rémi  ;  Université de Liège - ULiège > Department of Chemical Engineering > Nanomaterials, Catalysis, Electrochemistry
Lambert, Stéphanie  ;  Université de Liège - ULiège > Department of Chemical Engineering > Nanomaterials, Catalysis, Electrochemistry
Language :
English
Title :
Influence of nucleating agent addition on the textural and photo-Fenton properties of Fe(III)/SiO2 catalysts
Publication date :
September 2020
Journal title :
Journal of Physics and Chemistry of Solids
ISSN :
0022-3697
Publisher :
Elsevier, United Kingdom
Volume :
144
Pages :
109502
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 09 April 2020

Statistics


Number of views
96 (29 by ULiège)
Number of downloads
3 (3 by ULiège)

Scopus citations®
 
7
Scopus citations®
without self-citations
6
OpenCitations
 
5

Bibliography


Similar publications



Contact ORBi