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Clean and Facile Solution Synthesis of Iron(III)‐Entrapped γ‐Alumina Nanosorbents for Arsenic Removal
Author(s) -
Park Ho Seok,
Lee YoungChul,
Choi Bong Gill,
Hong Won Hi,
Yang JiWon
Publication year - 2008
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.200700119
Subject(s) - adsorption , mesoporous material , chemical engineering , nanorod , arsenic , materials science , porosity , specific surface area , chemistry , nanotechnology , catalysis , organic chemistry , metallurgy , composite material , engineering
Iron(III)‐entrapped γ‐alumina nanosorbents were prepared by an environmentally benign method using an ionothermal process based on an ionic liquid to synthesize the γ‐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 γ‐alumina nanorods as well as wormlike mesoporous alumina. In particular, the rodlike structure shows significantly greater mesoporosity than the wormlike porous γ‐alumina structure. Moreover, entrapment of iron(III) in the γ‐alumina nanosorbents with randomly debundled rodlike structures leads to the greatest As V removal capacity and the fastest adsorption rate 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.