Facile synthesis of carbon dots with superior sensing ability
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Carbon dots (CDs) have various applications in biomedical and environmental field, such as bio-imaging, bio-sensing and heavy metal detection. In this study, a novel class of CDs were synthesized using a one-step hydrothermal method. The fabricated CDs displayed stable photoluminescence, good water solubility, and photo stability. Moreover, the functional groups (carboxylic acid moieties and hydroxyls) on the surface of the obtained CDs enable it with superior sensing ability (e.g., very low detectable concentration for Pb2+: 5 nmol/L). With superior detection sensitivity, excellent fluorescent properties and facile fabrication method, the as-obtained CDs can find practical applications as cost-effective and sensitive chemo-sensors in water and food safety field.
KeywordsCarbon dots Hydrothermal method Photoluminescence Detection Pb
The National Natural Science Foundation of China (Grant nos: 51572303 and 21504082) supports this work. X. Zhang acknowledges the guidance from Prof. Mildred Dresselhaus. L. Jin acknowledges the program of Innovative Talent (in Science and Technology) in University of Henan Province (17HASTIT007).
Compliance with ethical standards
Conflict of interest
The authors declare no competing financial interest.
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