Synthesis Mechanisms, Structural Models, and Photothermal Therapy Applications of Top-Down Carbon Dots from Carbon Powder, Graphite, Graphene, and Carbon Nanotubes

Wenquan Shi, Qiurui Han, Jiajia Wu, Chunyu Ji, Yiqun Zhou, Shanghao Li, Lipeng Gao, Roger M. Leblanc, Zhili Peng

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In this study, top-down syntheses of carbon dots (CDs) from four different carbon precur-sors, namely, carbon nano powders, graphite, graphene, and carbon nanotubes, were carried out. Sys-tematic study demonstrated that the optical properties and surface functionalities of the CDs were quite similar and mainly influenced by the synthesis method, while the sizes, morphologies, chemical compositions, and core structures of the CDs were heavily influenced by the carbon precursors. On the basis of these studies, the formation processes and structural models of these four top-down CDs were proposed. The cell cytotoxicity and photothermal conversion efficiency of these CDs were also carefully evaluated, demonstrating their potential applications in photothermal therapy.

Original languageEnglish (US)
Article number1456
JournalInternational journal of molecular sciences
Volume23
Issue number3
DOIs
StatePublished - Feb 1 2022
Externally publishedYes

Keywords

  • Carbon dots
  • Carbon nano powders
  • Carbon nanotubes
  • Graphene
  • Graphite
  • Photothermal therapy

ASJC Scopus subject areas

  • Catalysis
  • Molecular Biology
  • Spectroscopy
  • Computer Science Applications
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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