Modification of Cellulose with ZnO Nanoparticles: From Sugarcane Bagasse to Antimicrobial CompositeZnO

Authors Jyoti Laxmi Sharma1, Rakesh Kumar Sharma1, Meena Kumari2, Banwari Lal Choudhary3, Veena Dhayal4

1Department of Biosciences, Manipal University Jaipur, Jaipur, Rajasthan 303007,India

2Department of Civil Engineering, Manipal University Jaipur, Jaipur, Rajasthan 303007, India

3Department of Physics, Banasthali Vidhyapith, Rajasthan 304022, India

4Department of Chemistry, Manipal University Jaipur, Jaipur, Rajasthan 303007, India

Issue Volume 13, Year 2021, Number 5
Dates Received 16 July 2021; revised manuscript received 20 October 2021; published online 25 October 2021
Citation Jyoti Laxmi Sharma, Rakesh Kumar Sharma, Meena Kumari, et al., J. Nano- Electron. Phys. 13 No 5, 05028 (2021)
PACS Number(s) 61.46. + w, 61.46.Df, 61.82.Rx
Keywords Zinc oxide nanoparticles, Zinc oxide modified cellulose, Staphylococcus aureus, Escherichia coli, Aspergillus niger, Phanerochaete chrysosporium, Geotrichum candidum.

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 mgml – 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).

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