Abstract
Carbon nanoparticles (C-dots) were prepared by refluxing the combustion soots of candles and corn stalk in nitric acid. The synthesized C-dots were characterized. The results showed a sharp increase in oxygen content and a sharp decrease in carbon content after oxidation. The C-dots had -OH and -CO2H groups introduced which made them hydrophilic. However, their difference was also obvious. The C-dots from candle soot had a 10-45 nm broad particle size distribution, and those from corn stalk soot had a 6-18 nm relatively small and narrow size distribution. The C-dots were mainly of sp 2 and sp 3 carbon structure different from the C-dots of diamond-like structure from candle soot. Interestingly, two kinds of C-dots all exhibited unique photoluminescent properties. The obtained C-dots have potential applications in a broad range of areas.
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Funded by the National Natural Science Foundation of China (Nos. 21465019 and 21266023), the Ningxia Natural Science Founds (NZ13011), the Research Project for Science and Technology of Higher Education of Ningxia Provine of China (NGY2014011), the Science and Technology Planning Project of Jiangsu Entry-exit Inspection Quarantine Bureauof China (2016KJ50) and the Zhenjiang Social Development Project (SH2014021)
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Li, Y., Chen, T. & Ma, Y. Nanosized carbon dots from organic matter and biomass. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 31, 823–826 (2016). https://doi.org/10.1007/s11595-016-1452-2
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DOI: https://doi.org/10.1007/s11595-016-1452-2