title: Clean and facile solution synthesis of iron(III)-entrapped gamma-alumina nanosorbents for arsenic removal.
abstract: Iro (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-alumina structure. Moreover, entrapment of iron(III) in the gamma-alumina nanosorbents with randomly debundled rodlike structures leads to the greatest AsV removal capacity and the fastest adsorption rate as compared to the other FeIII-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.
authors.affiliation: Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Yusong-gu, Daejeon, Korea.
authors.forename: Ho Seok
authors.initials: HS
authors.lastname: Park
authors.forename: Young-Chul
authors.initials: YC
authors.lastname: Lee
authors.forename: Bong Gill
authors.initials: BG
authors.lastname: Choi
authors.forename: Won Hi
authors.initials: WH
authors.lastname: Hong
authors.forename: Ji-Won
authors.initials: JW
authors.lastname: Yang
mesh_terms: D000327:Adsorption; D000537:Aluminum Oxide / Q000138:chemical synthesis* / Q000737:chemistry; D001151:Arsenic / Q000737:chemistry / Q000302:isolation & purification* / Q000633:toxicity; D003247:Conservation of Natural Resources; D007501:Iron / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification* / Q000633:toxicity
chemical_list: D014874:Water Pollutants, Chemical; D007501:Iron; D000537:Aluminum Oxide; D001151:Arsenic