Salman, G. (2023). A Comparative Study of Antibacterial Activity of ZnO and TiO2 Nanoparticles Against Gram-Positive and Gram-Negative Bacteria. Alustath, 41(10), 1232-1240. doi: 10.30684/etj.2023.143301.1577
Ghaed kh. Salman. "A Comparative Study of Antibacterial Activity of ZnO and TiO2 Nanoparticles Against Gram-Positive and Gram-Negative Bacteria". Alustath, 41, 10, 2023, 1232-1240. doi: 10.30684/etj.2023.143301.1577
Salman, G. (2023). 'A Comparative Study of Antibacterial Activity of ZnO and TiO2 Nanoparticles Against Gram-Positive and Gram-Negative Bacteria', Alustath, 41(10), pp. 1232-1240. doi: 10.30684/etj.2023.143301.1577
Salman, G. A Comparative Study of Antibacterial Activity of ZnO and TiO2 Nanoparticles Against Gram-Positive and Gram-Negative Bacteria. Alustath, 2023; 41(10): 1232-1240. doi: 10.30684/etj.2023.143301.1577

A Comparative Study of Antibacterial Activity of ZnO and TiO2 Nanoparticles Against Gram-Positive and Gram-Negative Bacteria

Engineering and Technology Journal
Volume 41, Issue 10, October 2023, Pages 1232-1240    PDF (947.09 K)
Document Type: Research Paper
DOI: 10.30684/etj.2023.143301.1577
Author
Ghaed kh. Salman*
Nanotechnology and Advanced Materials Research Center, University of Technology-Iraq, Alsina’a street, 10066 Baghdad, Iraq.
Abstract
Using the sol-gel technique, this study successfully synthesized two types of nanoparticles, ZnO and TiO2. The Fourier-transform infrared (FTIR) spectrum exhibited a broad peak, providing insights into crucial chemical bonds. The average grain sizes, 18.6 nm for ZnO and 12.6 nm for TiO2 were determined through X-ray diffraction (XRD). Scanning electron microscopy (SEM) images of the (ZnO & TiO2) powder revealed the presence of pores and agglomeration. The antimicrobial efficacy of these nanoparticles was evaluated against Gram-negative bacteria (E. coli and Proteus) and Gram-positive bacteria (Staph. aureus). The results demonstrated the capability of both ZnO and TiO2 to impact bacterial survival rates, with ZnO nanoparticles exhibiting a superior effect compared to TiO2 nanoparticles. This research contributes valuable insights into the antimicrobial properties of ZnO and TiO2 nanoparticles, emphasizing their potential applications in combating bacterial infections.

Highlights
  • Two types of Nanoparticles, ZnO and TiO2, were prepared utilizing the sol-gel technique.
  • Nanoparticle characterization was studied using XRD, SEM, and FTIR.
  • Antibacterial activity of the Nanoparticles was compared against E.coli and Staph.aureus bacteria.
  • Results showed ZnO NPs affected the two bacteria more than TiO2
Keywords
ZnO NPs; TiO2 NPs; antibacterial activity; XRD; SEM
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