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000155606 0247_ $$2doi$$a10.1016/j.micromeso.2014.06.009
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000155606 1001_ $$0P:(DE-HGF)0$$aMahy, Julien G.$$b0$$eCorresponding Author
000155606 245__ $$aHighly dispersed iron xerogel catalysts for p-nitrophenol degradation by photo-Fenton effects
000155606 260__ $$aAmsterdam [u.a.]$$bElsevier$$c2014
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000155606 520__ $$aSeveral iron xerogel catalysts were synthesized by hydrolysis and condensation of tetraethoxysilane (TEOS) and 3-(2-aminoethylamino)propyltrimethoxysilane (EDAS) which is able to form a chelate with iron ions. The EDAS/TEOS ratio strongly influences the texture of xerogel catalysts. The specific surface area and the micro- and mesoporous volume increase with this ratio. It seems that EDAS plays a nucleating agent role for silica particles and allows to anchor Fe-based moieties inside the silica network. Iron oxide nanoparticles of diameter 1–1.5 nm and Fe3+ ions result, encapsulated in silica particles with sizes of about 10–30 nm in diameter. The iron species was determined by Mössbauer spectroscopy and magnetometry measurements and only Fe3+ species were observed in xerogel catalysts. The Fenton and photo-Fenton effect of these catalysts were evaluated on the degradation of p-nitrophenol in aqueous media under different conditions. Results show that in the presence of H2O2, iron xerogel catalysts present a photo-Fenton effect, reaching 99% of degradation after 24 h.
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000155606 7001_ $$0P:(DE-HGF)0$$aTasseroul, Ludivine$$b1
000155606 7001_ $$0P:(DE-HGF)0$$aZubiaur, Anthony$$b2
000155606 7001_ $$0P:(DE-HGF)0$$aGeens, Jérémy$$b3
000155606 7001_ $$0P:(DE-HGF)0$$aBrisbois, Magali$$b4
000155606 7001_ $$0P:(DE-Juel1)145213$$aHerlitschke, Marcus$$b5$$ufzj
000155606 7001_ $$0P:(DE-Juel1)130706$$aHermann, Raphaël$$b6$$ufzj
000155606 7001_ $$0P:(DE-HGF)0$$aHeinrichs, Benoît$$b7
000155606 7001_ $$0P:(DE-HGF)0$$aLambert, Stéphanie D.$$b8
000155606 773__ $$0PERI:(DE-600)2012505-7$$a10.1016/j.micromeso.2014.06.009$$gVol. 197, p. 164 - 173$$p164 - 173$$tMicroporous and mesoporous materials$$v197$$x1387-1811$$y2014
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