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Synthesis of Carbon Quantum Dots from Jujubes for Detection of Iron(III) Ions

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In this work, carbon quantum dots (CQDs) were synthesized from jujubes via a hydrothermal process. The as-prepared CQDs have average sizes of about 3.12 nm and emit blue photoluminescence (PL) in the range 380–530 nm, depending on the excitation wavelength. The functional group compositions and structures of the CQDs were investigated via Fourier transform infrared spectroscopy and X-ray powder diffraction. Based on these analyses, a linear relationship was obtained between the relative fluorescence intensity and concentration of Fe3+ within the range of 0 to 200 μM (R 2 = 0.9927). Fe3+ quenched the PL intensity of the CQDs more than other heavy metals, which indicates that CQDs can be used effectively as an Fe3+ sensing media.
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Keywords: Carbon Quantum Dot; Fe3+ Detection; Hydrothermal Method; Jujube

Document Type: Research Article

Affiliations: Department of Chemical and Biological Engineering, Gachon University, Seongnam-si, Gyeonggi-do, 13120, Korea

Publication date: 01 February 2018

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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