https://doi.org/10.1140/epjs/s11734-022-00759-4
Regular Article
Impact of different magnetic materials added to silver–magnetite nanoparticles on the structural, magnetic and antimicrobial properties
1
Physics Department, Faculty of Science, Cairo University, Giza, Egypt
2
Basic Science Department, Higher Institute of Applied Arts 5th Settlement, New Cairo, Egypt
a asmaa@sci.cu.edu.eg, asmaa.ali@cu.edu.eghttp://scholar.cu.edu.eg/?q=asmaaali/
Received:
18
April
2022
Accepted:
16
December
2022
Published online:
11
January
2023
Different magnetic materials of spinel copper and cobalt nanoferrites added to silver–magnetite nanoparticles were fabricated by a facile, low cost, and rapid auto-combustion method to form a nanocomposite. X-ray diffraction patterns and atomic force microscopy were studied for the investigated samples and confirmed their nanosize range. Adding cobalt nanoferrite to silver–magnetite (CoAF) yielded a more pronounced effect in the magnetic measurements than adding copper nanoferrite (CuAF). This result was attributed to the much higher coercivity Hc and saturation magnetization Ms (5.7-fold and 2.8-fold, respectively) of CoAF than CuAF; accordingly, the CoAF nanocomposite can be applied to a permanent magnet. Next, the operating frequencies of the nanocomposites were calculated from the magnetic measurements. The CoAF and CuAF nanocomposites were applicable in the microwave super-high-frequency C-band and the microwave super-high-frequency S-band, respectively. Both nanocomposites were ineffective against the tested fungi but showed strong antimicrobial activities against the tested Gram-positive and Gram-negative bacteria. Thus, CoAF and CuAF nanocomposites are potential antibacterial nanomaterials for biomedical applications.
© The Author(s) 2023
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