Kiwifruit-Derived Carbon Dots for Sensitive Detection of Fe3+ Ions
- Authors
- Shasha, Peng; Park, Sangkwon; Yoo, In Sang; Park, Sang Joon
- Issue Date
- Sep-2017
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Kiwifruits; Carbon Dots; Fe3+ Ion Detection; Fluorescence Quenching
- Citation
- SCIENCE OF ADVANCED MATERIALS, v.9, no.9, pp.1555 - 1559
- Journal Title
- SCIENCE OF ADVANCED MATERIALS
- Volume
- 9
- Number
- 9
- Start Page
- 1555
- End Page
- 1559
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/5797
- DOI
- 10.1166/sam.2017.3171
- ISSN
- 1947-2935
- Abstract
- Fluorescent carbon dots (CDs) have been receiving much attention from researchers because of their properties such as excellent photostability and low toxicity. In this work, water-soluble fluorescent carbon dots were prepared from kiwifruits through a one-step, low-cost hydrothermal process. The as-prepared CDs had average sizes of 2.3 +/- 0.6 nm, and they emitted blue photoluminescence (PL). The surface functional group and structures of the CDs were investigated via Fourier transform infrared spectroscopy (FTIR) and X-ray powder diffraction (XRD). The blue fluorescence of the as-prepared CDs was effectively quenched by Fe3+ ions, whereas it was poorly quenched by other competing metal ions. Therefore, these CDs can serve as effective fluorescent probes for sensitive and selective detection of Fe3+ ions. Moreover, a linear relationship was obtained between the relative fluorescence intensity and the concentration of Fe3+ ions with a limit of detection of 0.37 nM and a linear detection range of 0 to 20 mu M.
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