Iron supported on bioinspired green silica for water remediation

Khalid M. Alotaibi, Lewis Shiels, Laure Lacaze, Tanya A. Peshkur, Peter Anderson, Libor Machala, Kevin Critchley, Siddharth V. Patwardhan, Lorraine T. Gibson

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Iron has been used previously in water decontamination, either unsupported or supported on clays, polymers, carbons or ceramics such as silica. However, the reported synthesis procedures are tedious, lengthy (involving various steps), and either utilise or produce toxic chemicals. Herein, the use of a simple, rapid, bio-inspired green synthesis method is reported to prepare, for the first time, a family of iron supported on green nanosilica materials (Fe@GN) to create new technological solutions for water remediation. In particular, Fe@GN were employed for the removal of arsenate ions as a model for potentially toxic elements in aqueous solution. Several characterization techniques were used to study the physical, structural and chemical properties of the new Fe@GN. When evaluated as an adsorption platform for the removal of arsenate ions, Fe@GN exhibited high adsorption capacity (69 mg of As per g of Fe@GN) with superior kinetics (reaching 35 mg As per g sorbent per hr) – threefold higher than the highest removal rates reported to date. Moreover, a method was developed to regenerate the Fe@GN allowing for a full recovery and reuse of the adsorbent in subsequent extractions; strongly highlighting the potential technological benefits of these new green materials.
LanguageEnglish
Pages567-576
Number of pages10
JournalChemical Science
Volume8
DOIs
Publication statusPublished - 13 Sep 2016

Fingerprint

Remediation
Silicon Dioxide
remediation
Iron
silica
Poisons
Silica
arsenate
iron
Water
Ions
adsorption
Adsorption
ion
Decontamination
Sorbents
ceramics
water
Adsorbents
Chemical properties

Keywords

  • water remediation
  • green nanosilica materials
  • iron
  • water contamination
  • arsenate ion

Cite this

Alotaibi, Khalid M. ; Shiels, Lewis ; Lacaze, Laure ; Peshkur, Tanya A. ; Anderson, Peter ; Machala, Libor ; Critchley, Kevin ; Patwardhan, Siddharth V. ; Gibson, Lorraine T. / Iron supported on bioinspired green silica for water remediation. In: Chemical Science. 2016 ; Vol. 8. pp. 567-576.
@article{77de029129284083905e3f9458009d55,
title = "Iron supported on bioinspired green silica for water remediation",
abstract = "Iron has been used previously in water decontamination, either unsupported or supported on clays, polymers, carbons or ceramics such as silica. However, the reported synthesis procedures are tedious, lengthy (involving various steps), and either utilise or produce toxic chemicals. Herein, the use of a simple, rapid, bio-inspired green synthesis method is reported to prepare, for the first time, a family of iron supported on green nanosilica materials (Fe@GN) to create new technological solutions for water remediation. In particular, Fe@GN were employed for the removal of arsenate ions as a model for potentially toxic elements in aqueous solution. Several characterization techniques were used to study the physical, structural and chemical properties of the new Fe@GN. When evaluated as an adsorption platform for the removal of arsenate ions, Fe@GN exhibited high adsorption capacity (69 mg of As per g of Fe@GN) with superior kinetics (reaching 35 mg As per g sorbent per hr) – threefold higher than the highest removal rates reported to date. Moreover, a method was developed to regenerate the Fe@GN allowing for a full recovery and reuse of the adsorbent in subsequent extractions; strongly highlighting the potential technological benefits of these new green materials.",
keywords = "water remediation, green nanosilica materials, iron, water contamination, arsenate ion",
author = "Alotaibi, {Khalid M.} and Lewis Shiels and Laure Lacaze and Peshkur, {Tanya A.} and Peter Anderson and Libor Machala and Kevin Critchley and Patwardhan, {Siddharth V.} and Gibson, {Lorraine T.}",
year = "2016",
month = "9",
day = "13",
doi = "10.1039/C6SC02937J",
language = "English",
volume = "8",
pages = "567--576",
journal = "Chemical Science",
issn = "2041-6520",

}

Alotaibi, KM, Shiels, L, Lacaze, L, Peshkur, TA, Anderson, P, Machala, L, Critchley, K, Patwardhan, SV & Gibson, LT 2016, 'Iron supported on bioinspired green silica for water remediation' Chemical Science, vol. 8, pp. 567-576. https://doi.org/10.1039/C6SC02937J

Iron supported on bioinspired green silica for water remediation. / Alotaibi, Khalid M.; Shiels, Lewis; Lacaze, Laure; Peshkur, Tanya A.; Anderson, Peter; Machala, Libor; Critchley, Kevin; Patwardhan, Siddharth V.; Gibson, Lorraine T.

In: Chemical Science, Vol. 8, 13.09.2016, p. 567-576.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Iron supported on bioinspired green silica for water remediation

AU - Alotaibi, Khalid M.

AU - Shiels, Lewis

AU - Lacaze, Laure

AU - Peshkur, Tanya A.

AU - Anderson, Peter

AU - Machala, Libor

AU - Critchley, Kevin

AU - Patwardhan, Siddharth V.

AU - Gibson, Lorraine T.

PY - 2016/9/13

Y1 - 2016/9/13

N2 - Iron has been used previously in water decontamination, either unsupported or supported on clays, polymers, carbons or ceramics such as silica. However, the reported synthesis procedures are tedious, lengthy (involving various steps), and either utilise or produce toxic chemicals. Herein, the use of a simple, rapid, bio-inspired green synthesis method is reported to prepare, for the first time, a family of iron supported on green nanosilica materials (Fe@GN) to create new technological solutions for water remediation. In particular, Fe@GN were employed for the removal of arsenate ions as a model for potentially toxic elements in aqueous solution. Several characterization techniques were used to study the physical, structural and chemical properties of the new Fe@GN. When evaluated as an adsorption platform for the removal of arsenate ions, Fe@GN exhibited high adsorption capacity (69 mg of As per g of Fe@GN) with superior kinetics (reaching 35 mg As per g sorbent per hr) – threefold higher than the highest removal rates reported to date. Moreover, a method was developed to regenerate the Fe@GN allowing for a full recovery and reuse of the adsorbent in subsequent extractions; strongly highlighting the potential technological benefits of these new green materials.

AB - Iron has been used previously in water decontamination, either unsupported or supported on clays, polymers, carbons or ceramics such as silica. However, the reported synthesis procedures are tedious, lengthy (involving various steps), and either utilise or produce toxic chemicals. Herein, the use of a simple, rapid, bio-inspired green synthesis method is reported to prepare, for the first time, a family of iron supported on green nanosilica materials (Fe@GN) to create new technological solutions for water remediation. In particular, Fe@GN were employed for the removal of arsenate ions as a model for potentially toxic elements in aqueous solution. Several characterization techniques were used to study the physical, structural and chemical properties of the new Fe@GN. When evaluated as an adsorption platform for the removal of arsenate ions, Fe@GN exhibited high adsorption capacity (69 mg of As per g of Fe@GN) with superior kinetics (reaching 35 mg As per g sorbent per hr) – threefold higher than the highest removal rates reported to date. Moreover, a method was developed to regenerate the Fe@GN allowing for a full recovery and reuse of the adsorbent in subsequent extractions; strongly highlighting the potential technological benefits of these new green materials.

KW - water remediation

KW - green nanosilica materials

KW - iron

KW - water contamination

KW - arsenate ion

U2 - 10.1039/C6SC02937J

DO - 10.1039/C6SC02937J

M3 - Article

VL - 8

SP - 567

EP - 576

JO - Chemical Science

T2 - Chemical Science

JF - Chemical Science

SN - 2041-6520

ER -

Alotaibi KM, Shiels L, Lacaze L, Peshkur TA, Anderson P, Machala L et al. Iron supported on bioinspired green silica for water remediation. Chemical Science. 2016 Sep 13;8:567-576. https://doi.org/10.1039/C6SC02937J