Synthesis and characterization of SrFeO3-δ nanoparticles as antimicrobial agent.

Autor: Abdel-Khalek, E. K., Rayan, D. A., Askar, Ahmed. A., Maksoud, M. I. A. Abdel, El-Bahnasawy, H. H.
Zdroj: Journal of Sol-Gel Science & Technology; 2021, Vol. 97 Issue 1, p27-38, 12p
Abstrakt: In this work, synthesis and characterization of SrFeO3-δ nanoparticles as antimicrobial agent are presented. Structural characterization of SrFeO3-δ sample shows that it has a cubic (Pm3m) phase with minor tetragonal phase. The morphology of the SrFeO3-δ nanoparticles sample was characterized by a field emission scanning electron microscope (FE-SEM) and high resolution transmission electron microscopy (HRTEM). Mössbauer spectroscopy and X-ray photoelectron spectroscopy (XPS) results showed that the iron exists in oxidation states Fe3+, Fe3.5+, and Fe4+. The SrFeO3-δ nanoparticles sample exhibits energy band gap (Eg = 1.75 eV) which lies in the Visible region. Thermal and magnetic studies provide an evidence for ferroelectricity and antiferromagnetic with small amount of ferromagnetic in SrFeO3-δ nanoparticles sample, respectively. SrFeO3-δ nanoparticles sample showing powerful activity to fight both of tested Gram-positive, Gram-negative bacteria, and fungi strains. The antimicrobial activity as well as the minimal inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC) of the SrFeO3-δ nanoparticles sample have been investigated. Highlights: Perovskite sample was synthesized by a sol-gel method. Mössbauer spectroscopy and XPS results showed that the iron existing in different states. MBC studies of SrFeO3-δ sample indicate promising antimicrobial effectiveness. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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