Nano-architecture of CaO/Ag-chitosan nanocomposite by sol gel process: formation and characterization
El Nahrawy, A., Bakr, A., Abou Hammad, A., Mansour, A. (2021). Nano-architecture of CaO/Ag-chitosan nanocomposite by sol gel process: formation and characterization. EKB Journal Management System, 64(12), 7393-7406. doi: 10.21608/ejchem.2021.80608.3995
Amany M. El Nahrawy; Ahmed M. Bakr; Ali B. Abou Hammad; A. M. Mansour. "Nano-architecture of CaO/Ag-chitosan nanocomposite by sol gel process: formation and characterization". EKB Journal Management System, 64, 12, 2021, 7393-7406. doi: 10.21608/ejchem.2021.80608.3995
El Nahrawy, A., Bakr, A., Abou Hammad, A., Mansour, A. (2021). 'Nano-architecture of CaO/Ag-chitosan nanocomposite by sol gel process: formation and characterization', EKB Journal Management System, 64(12), pp. 7393-7406. doi: 10.21608/ejchem.2021.80608.3995
El Nahrawy, A., Bakr, A., Abou Hammad, A., Mansour, A. Nano-architecture of CaO/Ag-chitosan nanocomposite by sol gel process: formation and characterization. EKB Journal Management System, 2021; 64(12): 7393-7406. doi: 10.21608/ejchem.2021.80608.3995

Nano-architecture of CaO/Ag-chitosan nanocomposite by sol gel process: formation and characterization

Egyptian Journal of Chemistry
Article 56, Volume 64, Issue 12, December 2021, Page 7393-7406  XML PDF (848.53 K)
Document Type: Original Article
DOI: 10.21608/ejchem.2021.80608.3995
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Authors
Amany M. El Nahrawy email orcid 1; Ahmed M. Bakrorcid 2; Ali B. Abou Hammadorcid 1; A. M. Mansour1
1Solid State Physics Department, Physics research division, National Research Centre, 33 El Bohouth St., Dokki, Giza 12622, Egypt.
2Spectroscopy Department, Physics Research Division, National Research Centre, 33 El Bohouth St., Dokki, Giza, 12622, Egypt
Abstract
Functionalize nano-architecture CaO/Ag-chitosan bio-nanoparticles were prepared by the acetic acid sol-gel process and were loaded into the chitosan nanocomposite. The so prepared bioactive nano-CaO/Ag-chitosan nanocomposite was characterized using XRD, TEM, FE-SEM, optical, and the antimicrobial activity was evaluated. The antibacterial evaluations implied that chitosan, nano-CaO, and nano-CaO/Ag-chitosan are exhibited subtle antimicrobial activities against both Gram-positive (Staphylococcus aureus) microbes and Gram-negative (Escherichia coli).Ag doping of CaO produces an oxygen vacancy, defects, and improved light scattering and so leads to transmission increase and absorption increase which in turn lead to increase of the bandgap energy. The optical conductivity of the nanocomposites decreased with Ag addition as a direct result of the bandgap increase. These prefatory investigations of the bio nanocomposites will open a good platform for their use in various bio-industries.
Keywords
Chitosan; Chitosan–CaO; Chitosan-Agnanocomposites; Sol gel process; Optical properties; Antimicrobial
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