Photochemical synthesis of carbon@silver nanocomposites and their synergistic antibacterial effect with cephalexin

Kunjie Wang, Qingjuan Ji, Feng Guan, Hongxia Li, Chunlei Li, Huixia Feng, Haiyan Fan

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Carbon@silver nanocomposites was synthesized via a photochemical process. The visible light and ambient O2 were used to induce silver nanoparticles (AgNPs) from AgNO3 in the solution of carbon quantum dots (CQDs) and form nanocomposites with CQDs. The final nanocomposite product was stabilized using polyvinylpyrrolidone. SEM images indicated the as-prepared nanocomposites have an average size of ∼21±5 nm. Some evidences for the combination of AgNPs and the CQDs were observed in FTIR, UV-Visible spectroscopy, as well as the fluorescence spectroscopy upon composition. The combination of the as-prepared nanocomposites and cephalexin showed synergistic antibacterial effect against gram-positive and gram-negative bacteria. A possible mechanism for the antibacterial effect was also proposed.

Original languageEnglish
Pages (from-to)715-720
Number of pages6
JournalJournal of Biomaterials and Tissue Engineering
Volume7
Issue number8
DOIs
Publication statusPublished - Jan 1 2017

Keywords

  • Antibacterial activities
  • Carbon quantum dots
  • Carbon@silver nanocomposites
  • Cephalexin

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Medicine (miscellaneous)
  • Biomedical Engineering

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