BiOClBr-coated fabrics with enhanced antimicrobial properties under ambient light

Mya Mya Khin, Yueping Bao, Yen Nan Liang, Magdiel I. Setyawati, Hani Gnayem, Kee Woei Ng, Yoel Sasson, Xiao Hu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

This study demonstrates the fabrication of ambient light enabled antimicrobial functional fabrics by coating flower-like bismuth oxyhalidei.e.BiOCl0.875Br0.125, with the use of poly(vinyl alcohol) (PVA) and poly(acrylic acid) (PAA) as binders for improved coating robustness and durability. The uniformity of the microparticles was ensured with simultaneous probe sonication during the stages of crystal nucleation and growth. The polymeric binders not only strongly anchor the particle on the fabric, but also serve as an ultra-thin protective layer on the BiOClBr that mitigates bismuth leaching. The efficacy of inhibiting bacteria was investigated over the BiOClBr-coated fabricsi.e.cotton and polyester, and the results showed that the coated fabrics could effectively inhibit both Gram-positive and Gram-negative bacteria,i.e. S. aureusandE. coli. In comparison with fabrics coated with other photocatalytic materials including bismuth oxide (Bi2O3) and zinc oxide (ZnO), an exceptionally better antimicrobial efficacy was observed for BiOClBr-coated fabrics. The BiOClBr-coated cotton showed ∼5.0 and ∼6.8 times higher disinfection efficacy towardsE. colicompared to that of ZnO and Bi2O3-coated cotton with the same particle weight percentage, respectively. Further elucidation of the probable mechanism by BiOClBr-coated fabrics is related to the excess amount of reactive oxygen species (ROS). Overall, BiOClBr has been shown to be a promising material to fabricate cost-effective antimicrobial functional surfaces for both environmental and biomedical applicationse.g.protective laboratory and factory clothing.

Original languageAmerican English
Pages (from-to)3079-3087
Number of pages9
JournalJournal of Materials Chemistry B
Volume9
Issue number13
DOIs
StatePublished - 7 Apr 2021

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry 2021.

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