| Autor: |
Sharma, Jyoti Laxmi, Sharma, Rakesh Kumar, Kumari, Meena, Choudhary, Banwari Lal, Dhayal, Veena |
| Předmět: |
|
| Zdroj: |
Journal of Nano- & Electronic Physics; 2021, Vol. 13 Issue 5, p05028-1-05028-5, 5p |
| Abstrakt: |
Cellulose fibers were extracted from sugarcane bagasse and then modified with ZnO nanoparticles (NPs) by a sol-gel process using an oxime modified Zn precursor [ZnCl2.2{HONC(CH3)2}] in different gram ratios to make them antimicrobial. ZnO modified cellulose fibers were further characterized by Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) studies. Obtained results confirmed well-dispersed hexagonal wurtzite ZnO NPs onto the surface of cellulose. Lower band gaps (2.87-2.48 eV) were observed in ZnO modified cellulose as compared to pure ZnO NPs (~ 3.3 eV). Antibacterial activities were examined against Staphylococcus aureus and Escherichia coli in different ratios (1:1, 1:2 and 1:3) and concentrations (1.5 to 200 mg·ml-1) of ZnO modified cellulose. The antifungal activity of ZnO modified cellulose (1:1) was evaluated against Aspergillus niger, Phanerochaete chrysosporium, and Geotrichum candidum. ZnO modified cellulose ratio of 1:1 at the tested concentration remarkably inhibited the mycelial growth of the fungus. The antifungal efficacy of ZnO modified cellulose depended on the concentration of the sample concerned, therefore maximal inhibition of mycelia growth occurred at the highest concentration (5 mg). [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
