Clean and facile solution synthesis of iron(III)-entrapped gamma-alumina nanosorbents for arsenic removal

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Iron(III)-entrapped gamma-alumina nanosorbents were prepared by an environmentally benign method using an ionothermal process based on an ionic liquid to synthesize the gamma-alumina host and a sonochemical method to entrap the iron(III) guest. The morphology of the alumina depends on the aluminum precursor used, giving aligned bundled and randomly debundled gamma-alumina nanorods as well as wormlike mesoporous alumina. In particular the rodlike structure shows significantly greater mesoporosity than the wormlike porous gamma-alumino structure. Moreover entrapment of iron(III) in the gamma-alumino nanosorbents with randomly debundled rodlike structures leads to the greatest As(V) removal capacity and the fastest adsorption rote as compared to the other Fe(III)-entrapped adsorbents, as a result of its larger surface area and pore sizes. Thus, this method provides a clean and effective route to an advanced host-guest adsorbent system for application in the removal of arsenic from drinking water.
Publisher
WILEY-BLACKWELL
Issue Date
2008-04
Language
English
Article Type
Article
Keywords

MESOPOROUS ALUMINA; IONOTHERMAL SYNTHESIS; IONIC LIQUIDS; NANOPARTICLES; SILICA; TEMPLATE; BOEHMITE; SURFACTANT; CARBON; ALUMINOPHOSPHATE

Citation

CHEMSUSCHEM, v.1, no.4, pp.356 - 362

ISSN
1864-5631
DOI
10.1002/cssc.200700119
URI
http://hdl.handle.net/10203/9719
Appears in Collection
CBE-Journal Papers(저널논문)
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