Abstract
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 H2O medium by fluorescence spectroscopy. SBA-IC-MN can be considered as highly selective and sensitive toward Hg2+ 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 Hg2+ ion.
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The authors thank the research support council of the Alzahra University and the University of Tehran.
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Mohammadi Ziarani, G., Ebrahimi, Z., Mohajer, F. et al. A Fluorescent Chemosensor Based on Functionalized Nanoporous Silica (SBA-15 SBA-IC-MN) for Detection of Hg2+ in Aqueous Media. Arab J Sci Eng 47, 397–406 (2022). https://doi.org/10.1007/s13369-021-05518-6
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DOI: https://doi.org/10.1007/s13369-021-05518-6