Copper at silica core – shell nanoparticles as antibacterial agents by sol-gel chemical methods

• Al- Ajeeli, Alaa F. Hashim ^[2] ; Razeg, Khalid Hamdi ^[2] ; Fuad Tariq Ibrahim ^[1]
  1. [1] University of Baghdad

     University of Baghdad

     Irak

     
  2. [2] Tikrit University, Salahuddin (Iraq)
• Localización: 3c Tecnología: glosas de innovación aplicadas a la pyme, ISSN-e 2254-4143, Vol. 12, Nº. 1, 2023, págs. 337-352
• Idioma: inglés
• Enlaces
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• Resumen

  • Core-shell Cu@sio2 nanoparticles were created by a chemical reaction in a sol gel, and their ability to inhibit S. aureus and E. coli bacteria was tested, when synthesized and characterized using ultraviolet-visible spectroscopy, a copper band could be seen before and after encapsulation at wavelengths of 625 nanometers and 635 nanometers, which are surface plasmonic resonant frequency bands, respectively. The production of Cu @Sio2 core shell nanoparticles was further confirmed using field emission scanning electron microscope (FESEM) pictures. The core shell nanoparticles have a mean size of 66 nanometers and a spherical shape, as shown in TEM. The X-ray diffraction patterns for the nanoparticles, which show face-centered cubic (FCC) of copper, match the crystal structure of Cu@sio2 we discovered using fourier transform infrared (FT-IR) spectroscopy, the fourier transform infrared interaction between the silica and the synthesized copper NPs was investigated. This revealed the capping of the CuNPs by SiO2. The inhibition zone was evident as a result of the activities of these compounds (14, 14, 16, and 20) and (24, 24, 28, and 30) against Escherichia coli bacteria and Staphylococcus aureus bacteria, respectively.