Biomass-derived Carbon dots and their coated surface as a potential antimicrobial agent

doi:10.1007/s13399-023-03968-6

Biomass-derived Carbon dots and their coated surface as a potential antimicrobial agent

2023-02-28

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DOI：10.1007/s13399-023-03968-6

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Carbon dots (CDs) with an average diameter of 6.3 nm were synthesized from the medicinal seed extract of Syzygium cumini L. using one-pot hydrothermal synthesis. The prepared CDs exhibited excitation-dependent emission characteristics with photoluminescence (PL) emission maxima at an excitation of 340 nm. The CDs at 500 mu g/mL displayed antimicrobial activities against four common pathogens. Both Staphylococcus aureus and S. epidermidis were completely eradicated by CDs within 12 h, compared to 24 h for Escherichia coli and Klebsiella pneumonia. The release of various oxygen species (ROS) was postulated to play a critical role in bacterial eradication. The CDs decorated on cotton fabric by ultrasonication also displayed good antibacterial activities against the above bacteria. The finding opens a plausible use of CDs in biomedical textiles with potent antimicrobial properties against both Gram-negative and Gram-positive bacteria.

Keywords:

Carbon dots

Hydrothermal

Antibacterial activity

Textile

Biomass-derived Carbon dots and their coated surface as a potential antimicrobial agent

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