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Isatin functionalized nanoporous SBA-15 as a selective fluorescent probe for the detection of Hg(II) in water

A highly ordered mesoporous silica material functionalized with isatin (SBA-Pr-IS) was designed and synthesized. Characterization techniques including XRD, TGA, BET, SEM, and FT-IR were employed to characterize the pore structure, textural properties, microscopic morphology, and molecular compositio... Full description

Journal Title: Analytical and Bioanalytical Chemistry 2017, Vol.409(12), pp.3175-3185
Main Author: Lashgari, Negar
Other Authors: Badiei, Alireza , Mohammadi Ziarani, Ghodsi , Faridbod, Farnoush
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 1618-2642 ; E-ISSN: 1618-2650 ; DOI: 10.1007/s00216-017-0258-1
Link: http://dx.doi.org/10.1007/s00216-017-0258-1
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recordid: springer_jour10.1007/s00216-017-0258-1
title: Isatin functionalized nanoporous SBA-15 as a selective fluorescent probe for the detection of Hg(II) in water
format: Article
creator:
  • Lashgari, Negar
  • Badiei, Alireza
  • Mohammadi Ziarani, Ghodsi
  • Faridbod, Farnoush
subjects:
  • SBA-15
  • Fluorescent probe
  • Nanoporous silica
  • Hg ion
  • Isatin
ispartof: Analytical and Bioanalytical Chemistry, 2017, Vol.409(12), pp.3175-3185
description: A highly ordered mesoporous silica material functionalized with isatin (SBA-Pr-IS) was designed and synthesized. Characterization techniques including XRD, TGA, BET, SEM, and FT-IR were employed to characterize the pore structure, textural properties, microscopic morphology, and molecular composition of grafted organic moieties of SBA-Pr-IS. The successful attachment of the organic moiety (0.34 mmol g −1 ) without the SBA-15 structure collapsing after the modification steps was confirmed. Fluorescence characterization of SBA-Pr-IS was examined upon addition of a wide variety of cations in aqueous medium and it showed high sensitivity toward Hg 2+ ions. During testing in an ion competition experiment, it was observed that the fluorescence changes of the probe were remarkably specific for Hg 2+ ions. Furthermore, a good linearity between the fluorescence intensity of this material and the concentration of Hg 2+ ions was constructed with a suitable detection limit of 3.7 × 10 −6  M. Finally, the applicability of the proposed method was successfully evaluated for the determination of Hg 2+ ions in real samples. Therefore, SBA-Pr-IS can be used as an efficient fluorescence probe for Hg 2+ ions. Graphical Abstract A novel organic-inorganic hybrid material was designed and synthesized by functionalization of SBA-15 mesoporous silica material with isatin. The evaluation of the sensing ability of SBA-Pr-IS using fluorescence spectroscopy revealed that the SBA-Pr-IS was a selective fluorescent probe for Hg 2+ ion in water in the presence of a wide range of metal cations.
language: eng
source:
identifier: ISSN: 1618-2642 ; E-ISSN: 1618-2650 ; DOI: 10.1007/s00216-017-0258-1
fulltext: fulltext
issn:
  • 1618-2650
  • 16182650
  • 1618-2642
  • 16182642
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titleIsatin functionalized nanoporous SBA-15 as a selective fluorescent probe for the detection of Hg(II) in water
creatorLashgari, Negar ; Badiei, Alireza ; Mohammadi Ziarani, Ghodsi ; Faridbod, Farnoush
ispartofAnalytical and Bioanalytical Chemistry, 2017, Vol.409(12), pp.3175-3185
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subjectSBA-15 ; Fluorescent probe ; Nanoporous silica ; Hg ion ; Isatin
descriptionA highly ordered mesoporous silica material functionalized with isatin (SBA-Pr-IS) was designed and synthesized. Characterization techniques including XRD, TGA, BET, SEM, and FT-IR were employed to characterize the pore structure, textural properties, microscopic morphology, and molecular composition of grafted organic moieties of SBA-Pr-IS. The successful attachment of the organic moiety (0.34 mmol g −1 ) without the SBA-15 structure collapsing after the modification steps was confirmed. Fluorescence characterization of SBA-Pr-IS was examined upon addition of a wide variety of cations in aqueous medium and it showed high sensitivity toward Hg 2+ ions. During testing in an ion competition experiment, it was observed that the fluorescence changes of the probe were remarkably specific for Hg 2+ ions. Furthermore, a good linearity between the fluorescence intensity of this material and the concentration of Hg 2+ ions was constructed with a suitable detection limit of 3.7 × 10 −6  M. Finally, the applicability of the proposed method was successfully evaluated for the determination of Hg 2+ ions in real samples. Therefore, SBA-Pr-IS can be used as an efficient fluorescence probe for Hg 2+ ions. Graphical Abstract A novel organic-inorganic hybrid material was designed and synthesized by functionalization of SBA-15 mesoporous silica material with isatin. The evaluation of the sensing ability of SBA-Pr-IS using fluorescence spectroscopy revealed that the SBA-Pr-IS was a selective fluorescent probe for Hg 2+ ion in water in the presence of a wide range of metal cations.
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abstractA highly ordered mesoporous silica material functionalized with isatin (SBA-Pr-IS) was designed and synthesized. Characterization techniques including XRD, TGA, BET, SEM, and FT-IR were employed to characterize the pore structure, textural properties, microscopic morphology, and molecular composition of grafted organic moieties of SBA-Pr-IS. The successful attachment of the organic moiety (0.34 mmol g −1 ) without the SBA-15 structure collapsing after the modification steps was confirmed. Fluorescence characterization of SBA-Pr-IS was examined upon addition of a wide variety of cations in aqueous medium and it showed high sensitivity toward Hg 2+ ions. During testing in an ion competition experiment, it was observed that the fluorescence changes of the probe were remarkably specific for Hg 2+ ions. Furthermore, a good linearity between the fluorescence intensity of this material and the concentration of Hg 2+ ions was constructed with a suitable detection limit of 3.7 × 10 −6  M. Finally, the applicability of the proposed method was successfully evaluated for the determination of Hg 2+ ions in real samples. Therefore, SBA-Pr-IS can be used as an efficient fluorescence probe for Hg 2+ ions. Graphical Abstract A novel organic-inorganic hybrid material was designed and synthesized by functionalization of SBA-15 mesoporous silica material with isatin. The evaluation of the sensing ability of SBA-Pr-IS using fluorescence spectroscopy revealed that the SBA-Pr-IS was a selective fluorescent probe for Hg 2+ ion in water in the presence of a wide range of metal cations.
copBerlin/Heidelberg
pubSpringer Berlin Heidelberg
doi10.1007/s00216-017-0258-1
pages3175-3185
date2017-05