Journal
RESEARCH ON CHEMICAL INTERMEDIATES
Volume 48, Issue 9, Pages 3957-3969Publisher
SPRINGER
DOI: 10.1007/s11164-022-04773-y
Keywords
Functionalized SBA-15; Fluorescent sensor; Ag+ ion; 3-Methyl-1-phenyl-5-oxo-1H-pyrazole-4-carbaldehyde; SBA-Pr-NMP
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Funding
- Research Council of Alzahra University
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A new chemosensor SBA-Pr-NMP based on silica was prepared and its sensing properties towards different metal ions were studied. It showed significantly enhanced fluorescence intensity in the presence of Ag+ ion and exhibited a good linear relationship with the concentration of Ag+ ions.
A new chemosensor based on silica entitled SBA-Pr-NMP was prepared by modification of SBA-15 with (3-aminopropyl)triethoxysilane and 3-methyl-1-phenyl-5-oxo-1H-pyrazole-4-carbaldehyde. The functionalized structure was characterized and confirmed via various methods like FT-IR, XRD, EDX, SEM, TGA, and BET. The sensing properties of SBA-Pr-NMP were studied using fluorescence spectroscopy in the presence of various metal ions, and the intensity increased remarkably with Ag+ ion compared to other cations. Also, a good linear relationship was obtained between the fluorescence intensity of SBA-Pr-NMP and the concentration of Ag+ with a calculated detection limit of 2.85 x 10(-7) M. [GRAPHICS] .
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