Antibacterial Bio-Nanocomposite Textile Material Produced from Natural Resources.
Darka MarkovićAndréa ZilleAna Isabel RibeiroDaiva MikučionieneBarbara SimončičBrigita TomšičMaja RadetićPublished in: Nanomaterials (Basel, Switzerland) (2022)
Growing demand for sustainable and green technologies has turned industries and research toward the more efficient utilization of natural and renewable resources. In an effort to tackle this issue, we developed an antibacterial textile nanocomposite material based on cotton and peat fibers with immobilized Cu-based nanostructures. In order to overcome poor wettability and affinity for Cu 2+ -ions, the substrate was activated by corona discharge and coated with the biopolymer chitosan before the in situ synthesis of nanostructures. Field emission scanning electron microscopy (FESEM) images show that the application of gallic or ascorbic acid as green reducing agents resulted in the formation of Cu-based nanosheets and mostly spherical nanoparticles, respectively. X-ray photoelectron spectroscopy (XPS) analysis revealed that the formed nanostructures consisted of Cu 2 O and CuO. A higher-concentration precursor solution led to higher copper content in the nanocomposites, independent of the reducing agent and chitosan deacetylation degree. Most of the synthesized nanocomposites provided maximum reduction of the bacteria Escherichia coli and Staphylococcus aureus . A combined modification using chitosan with a higher deacetylation degree, a 1 mM solution of CuSO 4 solution, and gallic acid resulted in an optimal textile nanocomposite with strong antibacterial activity and moderate Cu 2+ -ion release in physiological solutions. Finally, the Cu-based nanostructures partially suppressed the biodegradation of the textile nanocomposite in soil.
Keyphrases
- aqueous solution
- reduced graphene oxide
- electron microscopy
- quantum dots
- wastewater treatment
- metal organic framework
- carbon nanotubes
- escherichia coli
- drug delivery
- staphylococcus aureus
- visible light
- high resolution
- gold nanoparticles
- wound healing
- solid phase extraction
- silver nanoparticles
- solid state
- highly efficient
- deep learning
- pseudomonas aeruginosa
- single molecule
- convolutional neural network
- mass spectrometry
- biofilm formation
- ionic liquid
- liquid chromatography
- candida albicans
- simultaneous determination
- walled carbon nanotubes