Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 634, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2021.128018
Keywords
Gold nanoparticle; Titanium dioxide; Silk; Enhanced photocatalysis; coloration; Antibacterial
Categories
Funding
- Doctoral Promotion Program of Zhuhai College of Science and Technology and Cultivation Project for Innovation of Zhuhai College of Science and Technology, China [2018XJCQ023, 2020XJCQ003]
- Natural Science Foundation of Guangdong Province,China [2016A030313830]
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Enhanced functions of silk fabric were achieved by complex coating with both gold nanoparticles (AuNPs) and titanium dioxide nanoparticles (TiO2NPs). The combination of AuNPs and TiO2NPs provided better color fastness and antibacterial properties to silk fabric, and the assembly of functional nanoparticles on fibrous materials offers a potentially facile and effective strategy to achieve versatile fabrics in textile industry.
Enhanced functions of silk fabric were achieved by complex coating with both gold nanoparticles (AuNPs) and titanium dioxide nanoparticles (TiO2NPs). AuNPs were coated onto the silk fabric via in-situ synthesis, which was followed by loading TiO2NPs with assistance of polyethyleneimine (PEI). AuNPs imparted vivid color to silk fabric because of its localized surface plasmon resonance (LSPR), which maintained after the further assembly of TiO2NPs. The surface morphology and chemical structure of the functionalized silk fabrics were characterized in detail. The AuNP colored silk fabrics with TiO2NPs exhibited better light color fastness than the traditional dye colored silk with TiO2NPs. Synergistic effect between AuNPs and TiO2NPs endowed silk fabric with enhanced antibacterial property against Escherichia coli (E. coli). More importantly, AuNPs greatly improved the photocatalytic activity of TiO2NPs on silk fabric for decomposing contaminates. The assembly of functional nanoparticles on fibrous materials provides a potentially facile and effective strategy to achieve versatile fabrics in textile industry.
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