Chemical Research in Chinese Universities ›› 2023, Vol. 39 ›› Issue (2): 234-239.doi: 10.1007/s40242-022-2142-6

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Preparation of Fluorescent Carbon Dots from Chinese Herbal Medicine Alisma and Its Potential Applications in Photocatalytic Degradation of Malachite Green and Cell Imaging

LIU Meijing1, HAO Xiaoliang1, DAI Shujuan2, WANG Shaoyan1, WANG Yong1, ZHANG Hao1   

  1. 1. School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, P. R. China;
    2. School of Mining Engineering, University of Science and Technology Liaoning, Anshan 114051, P. R. China
  • Received:2022-04-16 Online:2023-04-01 Published:2023-03-16
  • Contact: HAO Xiaoliang E-mail:haoxiaoliang1980@163.com
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (No. U1860112).

Abstract: Natural plants and Chinese herbal medicines are valuable resources. It is one of the new tasks for medical workers to study the new application fields of these resources. In this work, one kind of traditional Chinese herbal plant, Alisma, was chosen as a carbon source to synthesize the carbon dots(CDs). This kind of CDs has an amorphous carbon structure and shows strong stability to time, temperature, and ion strength. The results show that the degradation efficiency of malachite green dye can reach 100% in 4.5 h without illumination, and the degradation efficiency is better than that in dark environment. In addition, the CDs have also been successfully applied to HeLa cell imaging. Simple synthesis method, stable properties, good photodegradation and bioimaging applications make this material of great application value.

Key words: Alisma, Carbon dot, Degradation, Photocatalyst, Cell imaging