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  • Determination of Iodide via Direct Fluorescence Quenching at Nitrogen-Doped Carbon Quantum Dot Fluorophores

    Author(s)
    Zhang, Haimin
    Li, Yibing
    Liu, Xiaolu
    Liu, Porun
    Wang, Yun
    An, Taicheng
    Yang, Huagui
    Jing, Dengwei
    Zhao, Huijun
    Griffith University Author(s)
    Zhao, Huijun
    Zhang, Haimin
    Liu, Porun
    Wang, Yun
    Liu, Xiaolu
    Li, Yibing
    Yang, Huagui
    Year published
    2014
    Metadata
    Show full item record
    Abstract
    The development of analytical methods for rapidly, sensitively, and selectively detecting iodide (I-) in aqueous media is critically important because I- is closely related to human health because of a number of diseases caused by the deficiency and radioactivity of I-. In this work, we describe N-doped carbon quantum dots as the fluorophores for the direct determination of I- fluorescence, achieving a detection limit of 10 占with an analytical linear range up to 2.0 mM. The experimental results also demonstrate that the N-doped carbon quantum dot fluorophores possess high selectivity for I- detection. The presence of nitrogen ...
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    The development of analytical methods for rapidly, sensitively, and selectively detecting iodide (I-) in aqueous media is critically important because I- is closely related to human health because of a number of diseases caused by the deficiency and radioactivity of I-. In this work, we describe N-doped carbon quantum dots as the fluorophores for the direct determination of I- fluorescence, achieving a detection limit of 10 占with an analytical linear range up to 2.0 mM. The experimental results also demonstrate that the N-doped carbon quantum dot fluorophores possess high selectivity for I- detection. The presence of nitrogen functional groups results in a positively charged carbon quantum dot surface, which is advantageous for the detection of I- fluorescence because of the strong electrostatic interaction between carbon quantum dots and I-. This work demonstrates the possibility of developing carbon quantum dot fluorophore-based fluorescence methods for the determination of other anions.
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    Journal Title
    Environmental Science & Technology Letters
    Volume
    1
    Issue
    1
    DOI
    https://doi.org/10.1021/ez400137j
    Copyright Statement
    Self-archiving of the author-manuscript version is not yet supported by this journal. Please refer to the journal link for access to the definitive, published version or contact the authors for more information.
    Subject
    Inorganic chemistry not elsewhere classified
    Environmental engineering
    Environmental biotechnology
    Publication URI
    http://hdl.handle.net/10072/66735
    Collection
    • Journal articles

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