Arsenic Removal from Dilute Solutions by High Surface Area Mesoporous Iron Oxyhydroxide

Abstract Mesostructured iron oxyhydroxide ($ FeO_{x} $) and iron oxyhydroxide–phosphate ($ FeO_{x} $P) composites were organized using dodecylsulfate surfactant as a template. X-ray diffraction studies depicted a lamellar structure of the product. Ion exchange and solvent extraction methods were emp...
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Autor*in:	Masih, Dilshad [verfasserIn] Seida, Yoshimi [verfasserIn] Izumi, Yasuo [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2009

Schlagwörter:	Arsenic removal Mesoporous Iron oxyhydroxide

Übergeordnetes Werk:	Enthalten in: Water, air & soil pollution - Dordrecht [u.a.] : Springer Science + Business Media B.V, 2001, 9(2009), 3-4 vom: Aug., Seite 203-211
Übergeordnetes Werk:	volume:9 ; year:2009 ; number:3-4 ; month:08 ; pages:203-211

Links:	Volltext

DOI / URN:	10.1007/s11267-009-9206-1

Katalog-ID:	SPR018350577

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520			\|a Abstract Mesostructured iron oxyhydroxide ($ FeO_{x} $) and iron oxyhydroxide–phosphate ($ FeO_{x} $P) composites were organized using dodecylsulfate surfactant as a template. X-ray diffraction studies depicted a lamellar structure of the product. Ion exchange and solvent extraction methods were employed for the removal of the surfactant. Carboxylate ions exchanged lamellar type mesostructured material reorganized to a wormhole-like mesoporous material when heated under $ N_{2} $ atmosphere. Surfactant was completely removed by carboxylate ions as observed by the Fourier transform infrared spectra. High surface area acetate-exchanged $ FeO_{x} $ (230 $ m^{2} $ $ g^{−1} $) was obtained after the surfactant removal from the composite (2.8 $ m^{2} $ $ g^{−1} $). Surface area of acetate-exchanged $ FeO_{x} $P was the highest (240 $ m^{2} %$ g^{−1} $) after the removal of the surfactant. Local structure of iron species of $ FeO_{x} $ was investigated by X-ray absorption fine structure spectroscopy. Further, Fe···Fe bond appeared at 3.21–3.25 Å with coordination number 2–3, showing a high degree of un-saturation of Fe···Fe bonds. As compared with bulk iron oxyhydroxide and iron-intercalated montmorillonite, the mesoporous iron materials were highly effective for arsenic removal from low concentrations of aqueous solutions. Furthermore, mesoporous iron materials were stable in aqueous phase.
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allfields	10.1007/s11267-009-9206-1 doi (DE-627)SPR018350577 (SPR)s11267-009-9206-1-e DE-627 ger DE-627 rakwb eng 333.7 ASE 43.50 bkl Masih, Dilshad verfasserin aut Arsenic Removal from Dilute Solutions by High Surface Area Mesoporous Iron Oxyhydroxide 2009 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Mesostructured iron oxyhydroxide ($ FeO_{x} $) and iron oxyhydroxide–phosphate ($ FeO_{x} $P) composites were organized using dodecylsulfate surfactant as a template. X-ray diffraction studies depicted a lamellar structure of the product. Ion exchange and solvent extraction methods were employed for the removal of the surfactant. Carboxylate ions exchanged lamellar type mesostructured material reorganized to a wormhole-like mesoporous material when heated under $ N_{2} $ atmosphere. Surfactant was completely removed by carboxylate ions as observed by the Fourier transform infrared spectra. High surface area acetate-exchanged $ FeO_{x} $ (230 $ m^{2} $ $ g^{−1} $) was obtained after the surfactant removal from the composite (2.8 $ m^{2} $ $ g^{−1} $). Surface area of acetate-exchanged $ FeO_{x} $P was the highest (240 $ m^{2} %$ g^{−1} $) after the removal of the surfactant. Local structure of iron species of $ FeO_{x} $ was investigated by X-ray absorption fine structure spectroscopy. Further, Fe···Fe bond appeared at 3.21–3.25 Å with coordination number 2–3, showing a high degree of un-saturation of Fe···Fe bonds. As compared with bulk iron oxyhydroxide and iron-intercalated montmorillonite, the mesoporous iron materials were highly effective for arsenic removal from low concentrations of aqueous solutions. Furthermore, mesoporous iron materials were stable in aqueous phase. Arsenic removal (dpeaa)DE-He213 Mesoporous (dpeaa)DE-He213 Iron oxyhydroxide (dpeaa)DE-He213 Seida, Yoshimi verfasserin aut Izumi, Yasuo verfasserin aut Enthalten in Water, air & soil pollution Dordrecht [u.a.] : Springer Science + Business Media B.V, 2001 9(2009), 3-4 vom: Aug., Seite 203-211 (DE-627)325295867 (DE-600)2035213-X 1573-2940 nnns volume:9 year:2009 number:3-4 month:08 pages:203-211 https://dx.doi.org/10.1007/s11267-009-9206-1 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_20 GBV_ILN_24 GBV_ILN_40 GBV_ILN_70 GBV_ILN_95 GBV_ILN_285 GBV_ILN_702 GBV_ILN_2005 GBV_ILN_2048 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4338 43.50 ASE AR 9 2009 3-4 08 203-211
spelling	10.1007/s11267-009-9206-1 doi (DE-627)SPR018350577 (SPR)s11267-009-9206-1-e DE-627 ger DE-627 rakwb eng 333.7 ASE 43.50 bkl Masih, Dilshad verfasserin aut Arsenic Removal from Dilute Solutions by High Surface Area Mesoporous Iron Oxyhydroxide 2009 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Mesostructured iron oxyhydroxide ($ FeO_{x} $) and iron oxyhydroxide–phosphate ($ FeO_{x} $P) composites were organized using dodecylsulfate surfactant as a template. X-ray diffraction studies depicted a lamellar structure of the product. Ion exchange and solvent extraction methods were employed for the removal of the surfactant. Carboxylate ions exchanged lamellar type mesostructured material reorganized to a wormhole-like mesoporous material when heated under $ N_{2} $ atmosphere. Surfactant was completely removed by carboxylate ions as observed by the Fourier transform infrared spectra. High surface area acetate-exchanged $ FeO_{x} $ (230 $ m^{2} $ $ g^{−1} $) was obtained after the surfactant removal from the composite (2.8 $ m^{2} $ $ g^{−1} $). Surface area of acetate-exchanged $ FeO_{x} $P was the highest (240 $ m^{2} %$ g^{−1} $) after the removal of the surfactant. Local structure of iron species of $ FeO_{x} $ was investigated by X-ray absorption fine structure spectroscopy. Further, Fe···Fe bond appeared at 3.21–3.25 Å with coordination number 2–3, showing a high degree of un-saturation of Fe···Fe bonds. As compared with bulk iron oxyhydroxide and iron-intercalated montmorillonite, the mesoporous iron materials were highly effective for arsenic removal from low concentrations of aqueous solutions. Furthermore, mesoporous iron materials were stable in aqueous phase. Arsenic removal (dpeaa)DE-He213 Mesoporous (dpeaa)DE-He213 Iron oxyhydroxide (dpeaa)DE-He213 Seida, Yoshimi verfasserin aut Izumi, Yasuo verfasserin aut Enthalten in Water, air & soil pollution Dordrecht [u.a.] : Springer Science + Business Media B.V, 2001 9(2009), 3-4 vom: Aug., Seite 203-211 (DE-627)325295867 (DE-600)2035213-X 1573-2940 nnns volume:9 year:2009 number:3-4 month:08 pages:203-211 https://dx.doi.org/10.1007/s11267-009-9206-1 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_20 GBV_ILN_24 GBV_ILN_40 GBV_ILN_70 GBV_ILN_95 GBV_ILN_285 GBV_ILN_702 GBV_ILN_2005 GBV_ILN_2048 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4338 43.50 ASE AR 9 2009 3-4 08 203-211
allfields_unstemmed	10.1007/s11267-009-9206-1 doi (DE-627)SPR018350577 (SPR)s11267-009-9206-1-e DE-627 ger DE-627 rakwb eng 333.7 ASE 43.50 bkl Masih, Dilshad verfasserin aut Arsenic Removal from Dilute Solutions by High Surface Area Mesoporous Iron Oxyhydroxide 2009 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Mesostructured iron oxyhydroxide ($ FeO_{x} $) and iron oxyhydroxide–phosphate ($ FeO_{x} $P) composites were organized using dodecylsulfate surfactant as a template. X-ray diffraction studies depicted a lamellar structure of the product. Ion exchange and solvent extraction methods were employed for the removal of the surfactant. Carboxylate ions exchanged lamellar type mesostructured material reorganized to a wormhole-like mesoporous material when heated under $ N_{2} $ atmosphere. Surfactant was completely removed by carboxylate ions as observed by the Fourier transform infrared spectra. High surface area acetate-exchanged $ FeO_{x} $ (230 $ m^{2} $ $ g^{−1} $) was obtained after the surfactant removal from the composite (2.8 $ m^{2} $ $ g^{−1} $). Surface area of acetate-exchanged $ FeO_{x} $P was the highest (240 $ m^{2} %$ g^{−1} $) after the removal of the surfactant. Local structure of iron species of $ FeO_{x} $ was investigated by X-ray absorption fine structure spectroscopy. Further, Fe···Fe bond appeared at 3.21–3.25 Å with coordination number 2–3, showing a high degree of un-saturation of Fe···Fe bonds. As compared with bulk iron oxyhydroxide and iron-intercalated montmorillonite, the mesoporous iron materials were highly effective for arsenic removal from low concentrations of aqueous solutions. Furthermore, mesoporous iron materials were stable in aqueous phase. Arsenic removal (dpeaa)DE-He213 Mesoporous (dpeaa)DE-He213 Iron oxyhydroxide (dpeaa)DE-He213 Seida, Yoshimi verfasserin aut Izumi, Yasuo verfasserin aut Enthalten in Water, air & soil pollution Dordrecht [u.a.] : Springer Science + Business Media B.V, 2001 9(2009), 3-4 vom: Aug., Seite 203-211 (DE-627)325295867 (DE-600)2035213-X 1573-2940 nnns volume:9 year:2009 number:3-4 month:08 pages:203-211 https://dx.doi.org/10.1007/s11267-009-9206-1 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_20 GBV_ILN_24 GBV_ILN_40 GBV_ILN_70 GBV_ILN_95 GBV_ILN_285 GBV_ILN_702 GBV_ILN_2005 GBV_ILN_2048 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4338 43.50 ASE AR 9 2009 3-4 08 203-211
allfieldsGer	10.1007/s11267-009-9206-1 doi (DE-627)SPR018350577 (SPR)s11267-009-9206-1-e DE-627 ger DE-627 rakwb eng 333.7 ASE 43.50 bkl Masih, Dilshad verfasserin aut Arsenic Removal from Dilute Solutions by High Surface Area Mesoporous Iron Oxyhydroxide 2009 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Mesostructured iron oxyhydroxide ($ FeO_{x} $) and iron oxyhydroxide–phosphate ($ FeO_{x} $P) composites were organized using dodecylsulfate surfactant as a template. X-ray diffraction studies depicted a lamellar structure of the product. Ion exchange and solvent extraction methods were employed for the removal of the surfactant. Carboxylate ions exchanged lamellar type mesostructured material reorganized to a wormhole-like mesoporous material when heated under $ N_{2} $ atmosphere. Surfactant was completely removed by carboxylate ions as observed by the Fourier transform infrared spectra. High surface area acetate-exchanged $ FeO_{x} $ (230 $ m^{2} $ $ g^{−1} $) was obtained after the surfactant removal from the composite (2.8 $ m^{2} $ $ g^{−1} $). Surface area of acetate-exchanged $ FeO_{x} $P was the highest (240 $ m^{2} %$ g^{−1} $) after the removal of the surfactant. Local structure of iron species of $ FeO_{x} $ was investigated by X-ray absorption fine structure spectroscopy. Further, Fe···Fe bond appeared at 3.21–3.25 Å with coordination number 2–3, showing a high degree of un-saturation of Fe···Fe bonds. As compared with bulk iron oxyhydroxide and iron-intercalated montmorillonite, the mesoporous iron materials were highly effective for arsenic removal from low concentrations of aqueous solutions. Furthermore, mesoporous iron materials were stable in aqueous phase. Arsenic removal (dpeaa)DE-He213 Mesoporous (dpeaa)DE-He213 Iron oxyhydroxide (dpeaa)DE-He213 Seida, Yoshimi verfasserin aut Izumi, Yasuo verfasserin aut Enthalten in Water, air & soil pollution Dordrecht [u.a.] : Springer Science + Business Media B.V, 2001 9(2009), 3-4 vom: Aug., Seite 203-211 (DE-627)325295867 (DE-600)2035213-X 1573-2940 nnns volume:9 year:2009 number:3-4 month:08 pages:203-211 https://dx.doi.org/10.1007/s11267-009-9206-1 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_20 GBV_ILN_24 GBV_ILN_40 GBV_ILN_70 GBV_ILN_95 GBV_ILN_285 GBV_ILN_702 GBV_ILN_2005 GBV_ILN_2048 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4338 43.50 ASE AR 9 2009 3-4 08 203-211
allfieldsSound	10.1007/s11267-009-9206-1 doi (DE-627)SPR018350577 (SPR)s11267-009-9206-1-e DE-627 ger DE-627 rakwb eng 333.7 ASE 43.50 bkl Masih, Dilshad verfasserin aut Arsenic Removal from Dilute Solutions by High Surface Area Mesoporous Iron Oxyhydroxide 2009 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Mesostructured iron oxyhydroxide ($ FeO_{x} $) and iron oxyhydroxide–phosphate ($ FeO_{x} $P) composites were organized using dodecylsulfate surfactant as a template. X-ray diffraction studies depicted a lamellar structure of the product. Ion exchange and solvent extraction methods were employed for the removal of the surfactant. Carboxylate ions exchanged lamellar type mesostructured material reorganized to a wormhole-like mesoporous material when heated under $ N_{2} $ atmosphere. Surfactant was completely removed by carboxylate ions as observed by the Fourier transform infrared spectra. High surface area acetate-exchanged $ FeO_{x} $ (230 $ m^{2} $ $ g^{−1} $) was obtained after the surfactant removal from the composite (2.8 $ m^{2} $ $ g^{−1} $). Surface area of acetate-exchanged $ FeO_{x} $P was the highest (240 $ m^{2} %$ g^{−1} $) after the removal of the surfactant. Local structure of iron species of $ FeO_{x} $ was investigated by X-ray absorption fine structure spectroscopy. Further, Fe···Fe bond appeared at 3.21–3.25 Å with coordination number 2–3, showing a high degree of un-saturation of Fe···Fe bonds. As compared with bulk iron oxyhydroxide and iron-intercalated montmorillonite, the mesoporous iron materials were highly effective for arsenic removal from low concentrations of aqueous solutions. Furthermore, mesoporous iron materials were stable in aqueous phase. Arsenic removal (dpeaa)DE-He213 Mesoporous (dpeaa)DE-He213 Iron oxyhydroxide (dpeaa)DE-He213 Seida, Yoshimi verfasserin aut Izumi, Yasuo verfasserin aut Enthalten in Water, air & soil pollution Dordrecht [u.a.] : Springer Science + Business Media B.V, 2001 9(2009), 3-4 vom: Aug., Seite 203-211 (DE-627)325295867 (DE-600)2035213-X 1573-2940 nnns volume:9 year:2009 number:3-4 month:08 pages:203-211 https://dx.doi.org/10.1007/s11267-009-9206-1 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_20 GBV_ILN_24 GBV_ILN_40 GBV_ILN_70 GBV_ILN_95 GBV_ILN_285 GBV_ILN_702 GBV_ILN_2005 GBV_ILN_2048 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4338 43.50 ASE AR 9 2009 3-4 08 203-211
language	English
source	Enthalten in Water, air & soil pollution 9(2009), 3-4 vom: Aug., Seite 203-211 volume:9 year:2009 number:3-4 month:08 pages:203-211
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format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Arsenic removal Mesoporous Iron oxyhydroxide
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container_title	Water, air & soil pollution
authorswithroles_txt_mv	Masih, Dilshad @@aut@@ Seida, Yoshimi @@aut@@ Izumi, Yasuo @@aut@@
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X-ray diffraction studies depicted a lamellar structure of the product. Ion exchange and solvent extraction methods were employed for the removal of the surfactant. Carboxylate ions exchanged lamellar type mesostructured material reorganized to a wormhole-like mesoporous material when heated under $ N_{2} $ atmosphere. Surfactant was completely removed by carboxylate ions as observed by the Fourier transform infrared spectra. High surface area acetate-exchanged $ FeO_{x} $ (230 $ m^{2} $ $ g^{−1} $) was obtained after the surfactant removal from the composite (2.8 $ m^{2} $ $ g^{−1} $). Surface area of acetate-exchanged $ FeO_{x} $P was the highest (240 $ m^{2} %$ g^{−1} $) after the removal of the surfactant. Local structure of iron species of $ FeO_{x} $ was investigated by X-ray absorption fine structure spectroscopy. Further, Fe···Fe bond appeared at 3.21–3.25 Å with coordination number 2–3, showing a high degree of un-saturation of Fe···Fe bonds. As compared with bulk iron oxyhydroxide and iron-intercalated montmorillonite, the mesoporous iron materials were highly effective for arsenic removal from low concentrations of aqueous solutions. 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author	Masih, Dilshad
spellingShingle	Masih, Dilshad ddc 333.7 bkl 43.50 misc Arsenic removal misc Mesoporous misc Iron oxyhydroxide Arsenic Removal from Dilute Solutions by High Surface Area Mesoporous Iron Oxyhydroxide
authorStr	Masih, Dilshad
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topic_title	333.7 ASE 43.50 bkl Arsenic Removal from Dilute Solutions by High Surface Area Mesoporous Iron Oxyhydroxide Arsenic removal (dpeaa)DE-He213 Mesoporous (dpeaa)DE-He213 Iron oxyhydroxide (dpeaa)DE-He213
topic	ddc 333.7 bkl 43.50 misc Arsenic removal misc Mesoporous misc Iron oxyhydroxide
topic_unstemmed	ddc 333.7 bkl 43.50 misc Arsenic removal misc Mesoporous misc Iron oxyhydroxide
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title	Arsenic Removal from Dilute Solutions by High Surface Area Mesoporous Iron Oxyhydroxide
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title_full	Arsenic Removal from Dilute Solutions by High Surface Area Mesoporous Iron Oxyhydroxide
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author_browse	Masih, Dilshad Seida, Yoshimi Izumi, Yasuo
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title_sort	arsenic removal from dilute solutions by high surface area mesoporous iron oxyhydroxide
title_auth	Arsenic Removal from Dilute Solutions by High Surface Area Mesoporous Iron Oxyhydroxide
abstract	Abstract Mesostructured iron oxyhydroxide ($ FeO_{x} $) and iron oxyhydroxide–phosphate ($ FeO_{x} $P) composites were organized using dodecylsulfate surfactant as a template. X-ray diffraction studies depicted a lamellar structure of the product. Ion exchange and solvent extraction methods were employed for the removal of the surfactant. Carboxylate ions exchanged lamellar type mesostructured material reorganized to a wormhole-like mesoporous material when heated under $ N_{2} $ atmosphere. Surfactant was completely removed by carboxylate ions as observed by the Fourier transform infrared spectra. High surface area acetate-exchanged $ FeO_{x} $ (230 $ m^{2} $ $ g^{−1} $) was obtained after the surfactant removal from the composite (2.8 $ m^{2} $ $ g^{−1} $). Surface area of acetate-exchanged $ FeO_{x} $P was the highest (240 $ m^{2} %$ g^{−1} $) after the removal of the surfactant. Local structure of iron species of $ FeO_{x} $ was investigated by X-ray absorption fine structure spectroscopy. Further, Fe···Fe bond appeared at 3.21–3.25 Å with coordination number 2–3, showing a high degree of un-saturation of Fe···Fe bonds. As compared with bulk iron oxyhydroxide and iron-intercalated montmorillonite, the mesoporous iron materials were highly effective for arsenic removal from low concentrations of aqueous solutions. Furthermore, mesoporous iron materials were stable in aqueous phase.
abstractGer	Abstract Mesostructured iron oxyhydroxide ($ FeO_{x} $) and iron oxyhydroxide–phosphate ($ FeO_{x} $P) composites were organized using dodecylsulfate surfactant as a template. X-ray diffraction studies depicted a lamellar structure of the product. Ion exchange and solvent extraction methods were employed for the removal of the surfactant. Carboxylate ions exchanged lamellar type mesostructured material reorganized to a wormhole-like mesoporous material when heated under $ N_{2} $ atmosphere. Surfactant was completely removed by carboxylate ions as observed by the Fourier transform infrared spectra. High surface area acetate-exchanged $ FeO_{x} $ (230 $ m^{2} $ $ g^{−1} $) was obtained after the surfactant removal from the composite (2.8 $ m^{2} $ $ g^{−1} $). Surface area of acetate-exchanged $ FeO_{x} $P was the highest (240 $ m^{2} %$ g^{−1} $) after the removal of the surfactant. Local structure of iron species of $ FeO_{x} $ was investigated by X-ray absorption fine structure spectroscopy. Further, Fe···Fe bond appeared at 3.21–3.25 Å with coordination number 2–3, showing a high degree of un-saturation of Fe···Fe bonds. As compared with bulk iron oxyhydroxide and iron-intercalated montmorillonite, the mesoporous iron materials were highly effective for arsenic removal from low concentrations of aqueous solutions. Furthermore, mesoporous iron materials were stable in aqueous phase.
abstract_unstemmed	Abstract Mesostructured iron oxyhydroxide ($ FeO_{x} $) and iron oxyhydroxide–phosphate ($ FeO_{x} $P) composites were organized using dodecylsulfate surfactant as a template. X-ray diffraction studies depicted a lamellar structure of the product. Ion exchange and solvent extraction methods were employed for the removal of the surfactant. Carboxylate ions exchanged lamellar type mesostructured material reorganized to a wormhole-like mesoporous material when heated under $ N_{2} $ atmosphere. Surfactant was completely removed by carboxylate ions as observed by the Fourier transform infrared spectra. High surface area acetate-exchanged $ FeO_{x} $ (230 $ m^{2} $ $ g^{−1} $) was obtained after the surfactant removal from the composite (2.8 $ m^{2} $ $ g^{−1} $). Surface area of acetate-exchanged $ FeO_{x} $P was the highest (240 $ m^{2} %$ g^{−1} $) after the removal of the surfactant. Local structure of iron species of $ FeO_{x} $ was investigated by X-ray absorption fine structure spectroscopy. Further, Fe···Fe bond appeared at 3.21–3.25 Å with coordination number 2–3, showing a high degree of un-saturation of Fe···Fe bonds. As compared with bulk iron oxyhydroxide and iron-intercalated montmorillonite, the mesoporous iron materials were highly effective for arsenic removal from low concentrations of aqueous solutions. Furthermore, mesoporous iron materials were stable in aqueous phase.
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title_short	Arsenic Removal from Dilute Solutions by High Surface Area Mesoporous Iron Oxyhydroxide
url	https://dx.doi.org/10.1007/s11267-009-9206-1
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up_date	2024-07-03T19:04:03.868Z
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