A Fluorescent Chemosensor Based on Functionalized Nanoporous Silica (SBA-15 SBA-IC-MN) for Detection of Hg2+ in Aqueous Media

A highly ordered mesoporous silica SBA-15 was modified by indole-3-carbaldehyde followed by covalent grafting of malononitrile to prepare organic–inorganic hybrid nanomaterial (SBA-IC-MN). The characterization of the product presented the successful attachment of organic moieties at the surface of S...

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Bibliographic Details
Published in:Arabian Journal for Science and Engineering 2022, Vol.47 (1), p.397-406
Main Authors: Mohammadi Ziarani, Ghodsi, Ebrahimi, Zahra, Mohajer, Fatemeh, Badiei, Alireza
Format: Article
Language:English
Subjects:
Aqueous solutions
Chemical Sciences
Chemical sensors
Chemoreceptors
Engineering
Fluorescence
Humanities and Social Sciences
Malononitrile
Mercury (metal)
multidisciplinary
Nanomaterials
Organic chemistry
Research Article-Chemistry
Science
Silicon dioxide
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Summary:A highly ordered mesoporous silica SBA-15 was modified by indole-3-carbaldehyde followed by covalent grafting of malononitrile to prepare organic–inorganic hybrid nanomaterial (SBA-IC-MN). The characterization of the product presented the successful attachment of organic moieties at the surface of SBA-15 and the preservation of the original structure of SBA-15. The optical sensing ability of SBA-IC-MN was examined via different metal ions in H 2 O medium by fluorescence spectroscopy. SBA-IC-MN can be considered as highly selective and sensitive toward Hg 2+ ions with a detection limit of 3.26 × 10 –6 . Further, excellent linearity was obtained between the fluorescence intensity of SBA-IC-MN and the concentration of Hg 2+ ion.
ISSN:2193-567X
1319-8025
2191-4281
DOI:10.1007/s13369-021-05518-6