One- pot facile synthesis of nitrogen doped graphene quantum dots based on N',2-dihydroxyethanimidamide and citric acid

Document Type : Original Article

Authors

1 Chemistry Department, Faculty of Science, Azarbaijan Shahid Madani University, Tabriz, Iran

2 Educational Sciences Department, Faculty of Science, Farhangian University, Tabriz, Iran

10.22049/cic.2024.29525.1037

Abstract

Graphene quantum dots (GQDs) are tiny segments of graphene whose electron mobility is confined in all three dimensions. Graphene is a 0-bandgap semiconductor possessing an infinite exciton Bohr diameter. Therefore, quantum confinement is evident in all graphene fragments. The GQDs are usually under 20 nm in dimensions. We report a facile hydrothermal method for synthesis of graphene quantum dots contains nitrogen atoms (N-GQDs). This study shows interaction between citric acid (CA) and N',2-dihydroxyethanimidamide (DHAA) in which N-doped graphene quantum dots were synthesized. Due to use of DHAA that has two active sites, synthesized N-GQDs have special morphology, fluorescence and viscosity. Compared with other nitrogen compounds that is necessary for N-GQDs synthesis, DHAA is much more suitable due to low toxicity and stability. Synthesized N-GQDs were identified by FT-IR, XRD, TGA and fluorescence.

Keywords

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Communications In Catalysis
Volume 2, Issue 2
January 2024
Pages 44-55

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History

  • Receive Date: 11 March 2024
  • Revise Date: 06 April 2024
  • Accept Date: 03 May 2024

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