Nanosized Carbon Dots from Organic Matter and Biomass

作者：Li Yuanyuan^*; Chen Tong; Ma Yulong

来源：Journal of Wuhan University of Technology-Materials Science Edition, 2016, 31(4): 823-826.

DOI：10.1007/s11595-016-1452-2

• carbon nanoparticles
• carbon structure
• organic matter
• biomass
• characterization

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.

• 出版日期2016-8
• 单位宁夏大学