Waste-Derived Sustainable Fluorescent Nanocarbon-Coated Breathable Functional Fabric for Antioxidant and Antimicrobial Applications

Poushali Das, Masoomeh Sherazee, Parham Khoshbakht Marvi, Syed Rahin Ahmed, Aharon Gedanken, Seshasai Srinivasan, Amin Reza Rajabzadeh

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


Hospital-acquired (nosocomial) infections account for the majority of adverse health effects during care delivery, placing an immense financial strain on healthcare systems around the world. For the first time, the present article provides evidence of a straightforward pollution-free technique to fabricate a heteroatom-doped carbon dot immobilized fluorescent biopolymer composite for the development of functional textiles with antioxidant and antimicrobial properties. A simple, facile, and eco-friendly approach was devised to prepare heteroatom-doped carbon dots from waste green tea and a biopolymer. The carbon dots showed an excitation-dependent emission behavior, and the XPS data unveiled that they are co-doped with nitrogen and sulfur. A facile physical compounding strategy was adopted to fabricate a carbon dot reinforced biopolymeric composite followed by immobilization onto the textile. The composite textiles revealed excellent antioxidant activity, determined by 1,1-diphenyl-2-picrylhydrazyl (>80%) and 2,2′-azinobis-3-ethylbenzothiazoline-6-sulfonic acid assays (>90%). The results of the disc diffusion assay indicated that the composite textiles substantially inhibited the growth of both tested bacteria Escherichia coli and Bacillus subtilis with increasing coating cycles. The time-dependent antibacterial experiments revealed that the nanocomposite can inhibit significant bacterial growth within a few hours. The present study could open up the possibility for the commercialization of inexpensive smart textile substrates for the prevention of microbial contamination used for the medical and healthcare field.

Original languageEnglish
Pages (from-to)29425-29439
Number of pages15
JournalACS applied materials & interfaces
Issue number24
StatePublished - 21 Jun 2023

Bibliographical note

Publisher Copyright:
© 2023 American Chemical Society.


A.R.R. and S.S. are grateful to NSERC Canada for funding this research through their Discovery grants program.

FundersFunder number
Natural Sciences and Engineering Research Council of Canada


    • antibacterial activity
    • antioxidant properties
    • carbon dots
    • functional fabric
    • polymer nanocomposites


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