Antibiotics (Jan 2021)

Facile In-Situ Fabrication of a Ternary ZnO/TiO<sub>2</sub>/Ag Nanocomposite for Enhanced Bactericidal and Biocompatibility Properties

  • Priyadarshini Sakthi Mohan,
  • Faridah Sonsuddin,
  • Azizah Binti Mainal,
  • Rosiyah Yahya,
  • Gopinath Venkatraman,
  • Jamuna Vadivelu,
  • Dunia A. Al-Farraj,
  • Amal M. Al-Mohaimeed,
  • Khaloud Mohammed Alarjani

DOI
https://doi.org/10.3390/antibiotics10010086
Journal volume & issue
Vol. 10, no. 1
p. 86

Abstract

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This paper presents for the first time a successful fabrication of ternary ZnO/TiO2/Ag nanocomposites consisting of zinc oxide (ZnO), titania (TiO2) and silver (Ag) nanoparticles (NPs) synthesised using Morinda citrifolia fruit (MCF) extract. ZnONPs were synthesised using the co-precipitation method, and TiO2 and Ag were introduced into the precursor solutions under microwave irradiation to obtain ZnO/TiO2/Ag nanocomposites (NCs). This material demonstrated enhanced bactericidal effect towards bacterial pathogens compared to that of the binary TiO2/Ag, Ag and TiO2 alone. In vitro cytotoxicity results of the as-synthesised ZnO/TiO2/AgNCs on RAW 264.7 macrophages and A549 cell lines revealed a negative role in cytotoxicity, but contributed astoundingly towards antimicrobials as compared of Ag alone and binary Ag/TiO2. This study shows that the resultant ternary metal/bi-semiconductor nanocomposites may provide a therapeutic strategy for the eradication of bacterial pathogens without affecting the healthy mammalian cells.

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