TY  - JOUR
AU  - Mahy, Julien G.
AU  - Tasseroul, Ludivine
AU  - Zubiaur, Anthony
AU  - Geens, Jérémy
AU  - Brisbois, Magali
AU  - Herlitschke, Marcus
AU  - Hermann, Raphaël
AU  - Heinrichs, Benoît
AU  - Lambert, Stéphanie D.
TI  - Highly dispersed iron xerogel catalysts for p-nitrophenol degradation by photo-Fenton effects
JO  - Microporous and mesoporous materials
VL  - 197
SN  - 1387-1811
CY  - Amsterdam [u.a.]
PB  - Elsevier
M1  - FZJ-2014-04674
SP  - 164 - 173
PY  - 2014
AB  - Several 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. The EDAS/TEOS ratio strongly influences the texture of xerogel catalysts. The specific surface area and the micro- and mesoporous volume increase with this ratio. It seems that EDAS plays a nucleating agent role for silica particles and allows to anchor Fe-based moieties inside the silica network. Iron oxide nanoparticles of diameter 1–1.5 nm and Fe3+ ions result, encapsulated in silica particles with sizes of about 10–30 nm in diameter. The iron species was determined by Mössbauer spectroscopy and magnetometry measurements and only Fe3+ species were observed in xerogel catalysts. The Fenton and photo-Fenton effect of these catalysts were evaluated on the degradation of p-nitrophenol in aqueous media under different conditions. Results show that in the presence of H2O2, iron xerogel catalysts present a photo-Fenton effect, reaching 99% of degradation after 24 h.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000340990200021
DO  - DOI:10.1016/j.micromeso.2014.06.009
UR  - https://juser.fz-juelich.de/record/155606
ER  -