Abstract
In this work, graphene quantum dots (GQDs) was synthesized through hydrothermal method and used as a photoluminescent bulk nano-chemosensor for detection of Ce3+ ion in the aqueous solution. The synthesized GQD was characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), UV-Visible absorption and fluorescence emission spectroscopy. The sheet diameters of the synthesized GQDs were mainly distributed in the range of 15–20 nm. The interactions of GQDs with common cations and lanthanide ions were studied by fluorescence spectroscopy. Among the tested cations, Ce3+ ions was able to quench the fluorescence emission intensity of the GQD selectively. This quenching can be attributed to a redox mechanism between Ce3+ ion on the GQDs surface.
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The authors thank the research council of University of Tehran for financial support of this work.
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Salehnia, F., Faridbod, F., Dezfuli, A.S. et al. Cerium(III) Ion Sensing Based on Graphene Quantum Dots Fluorescent Turn-Off. J Fluoresc 27, 331–338 (2017). https://doi.org/10.1007/s10895-016-1962-5
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DOI: https://doi.org/10.1007/s10895-016-1962-5