Recovery of copper/carbon matrix nanoheteroarchitectures from recyclable electronic waste and their efficacy as antibacterial agents
Author's Department
Nanotechnology Program
Second Author's Department
Energy Materials Laboratory
Third Author's Department
Biology Department
Fourth Author's Department
Energy Materials Laboratory
Fifth Author's Department
Biology Department
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https://doi.org/10.1039/d4ra04750h
Document Type
Research Article
Publication Title
RSC Advances
Publication Date
8-15-2024
doi
10.1039/d4ra04750h
Abstract
Innovative solutions are urgently needed with the growing environmental hazard of electronic waste (e-waste) and the rising global threat of bacterial infections. This study addresses both issues by using e-waste to produce copper nanoparticles within a carbon matrix (Cu/C NPs), mitigating environmental hazards while exploring their antibacterial properties. Printed circuit boards from discarded computers were collected and treated with 2 M ammonium citrate dissolved in 8% ammonia solution. The leached solution was used to synthesize copper particles using ascorbic acid. The synthesized Cu/C NPs were characterized using various techniques such as EDX, field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Fourier transform infrared (FT-IR) spectroscopy. The antibacterial activity of Cu/C NPs against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) was evaluated using colony-forming unit (CFU) reduction assay and calculating the minimum inhibitory concentrations (MICs). The Cu/C NPs were found to be effective against E. coli and S. aureus with 100% and 98% CFU reduction, respectively, with MICs ranging from 250 to 375 μg mL−1 for E. coli and 375 to 750 μg mL−1 for S. aureus, according to the bacterial load. The bactericidal kinetics showed complete bacterial elimination after 5 and 7 hours for E. coli and S. aureus, respectively. This study presents a sustainable approach for utilizing e-waste and demonstrates the potential of the recovered nanoparticles for antibacterial applications.
First Page
25750
Last Page
25758
Recommended Citation
APA Citation
Abdelkhalek, M.
Seif, R.
Abdallah, R.
Akar, A.
...
(2024). Recovery of copper/carbon matrix nanoheteroarchitectures from recyclable electronic waste and their efficacy as antibacterial agents. RSC Advances, 14(35), 25750–25758.
10.1039/d4ra04750h
https://fount.aucegypt.edu/faculty_journal_articles/6006
MLA Citation
Abdelkhalek, Mariam M., et al.
"Recovery of copper/carbon matrix nanoheteroarchitectures from recyclable electronic waste and their efficacy as antibacterial agents." RSC Advances, vol. 14,no. 35, 2024, pp. 25750–25758.
https://fount.aucegypt.edu/faculty_journal_articles/6006
Comments
Article. Record derived from SCOPUS.