Vertical graphene nanoarray decorated with Ag nanoparticles exhibits enhanced antibacterial effects

Jian Zhang, Santosh Pandit*, Shadi Rahimi, Zhejian Cao, Ivan Mijakovic*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Bacterial infection of biomedical implants is an important clinical challenge, driving the development of novel antimicrobial materials. The antibacterial effect of vertically aligned graphene as a nanoarray coating has been reported. In this study, vertically aligned graphene nanosheets decorated with silver nanoparticles were fabricated to enhance antibacterial effectiveness. Vertical graphene (VG) nanoflakes were synthesized by plasma-enhanced chemical vapor deposition (PECVD). Ag nanoparticles were attached to the surface of VG through using polydopamine and achieving a sustained release of Ag+. VG loaded with Ag nanoparticles (VGP/Ag) not only prevented bacterial adhesion for a long time, but also exhibited good biocompatibility. This work provides a new venue for designing antibacterial surfaces based on combination of graphene nanoarrays with other nanomaterials, and the results indicate that this approach could be very successful in preventing implant associated infections.

Original languageEnglish
JournalJournal of Colloid and Interface Science
Volume676
Pages (from-to)808-816
Number of pages9
ISSN0021-9797
DOIs
Publication statusPublished - 2024

Keywords

  • Ag nanoparticles
  • Antibacterial properties
  • Cytotoxicity
  • Polydopamine
  • Vertical graphene

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