Abstract
Background: Antibacterial materials have attracted much attention due to its important role in human health and safety. Therefore the development and exploitation of novel antibacterial materials and agents with highly effective antibacterial activity are very necessary.
Methods: A simple method to prepare antibacterial multi-walled carbon nanotubes (MWCNTs) was described. MWCNTs were coated with a reactive polydopamine (PDA) layer by dispersing them in dopamine (DA) solution, followed with chemical deposition of silver nanoparticles (Ag NPs) on the PDA layer. Antibacterial activity of MWCNTs@PDA@Ag NPs towards E. coli and S. aureus was estimated by standard plate count method.
Results: Spherical silver nanoparticles with size of 5-6 nm were uniformly decorated on the sidewalls of MWCNTs. The MWCNTs@PDA@Ag NPs composite shows a good antibacterial property towards E. coli and S. aureus, with an antibacterial rate of 93.8% at the concentration of 6.25µg/mL and an antibacterial rate of 93.1% at the concentration of 2µg/mL, respectively.
Conclusion: The MWCNTs@PDA@Ag NPs composite exhibits excellent antibacterial activity towards E. coli and S. aureus, and it is an ideal material for sterilization.
Keywords: Antibacterial property, carbon nanotubes, polydopamine, silver nanoparticles.
Graphical Abstract
Call for Papers in Thematic Issues
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The application of nanoscience has brought about a revolution in the field of mechanical engineering by providing novel materials, boosting manufacturing processes, and generating cutting-edge products. The purpose of this special issue is to investigate the enormous impact that nanoscience has had on mechanical engineering, with a particular emphasis on ...read more
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This special issue collection will highlight developments on the recent trends about the synthesis of metal oxides, nanoclusters, biomaterials, 2D nanomaterials, nanocrystals, nanocomposites, etc. and their applications in electrochemical systems, tissue regeneration, energy storage and harvesting, sensors, etc. The novelty of the methods in the chemical synthesis and their characterizations, ...read more
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Graphene and 2D Materials for Energy Storage and Conversion
This thematic issue will discuss the recent advances in graphene-based nanomaterials for different energy technologies. Graphene possesses a high surface area, and stable structure and exhibits many interesting electronic, optical, and mechanical properties due to its 2D crystal structure. Graphene is of both fundamental interest and suitable for a wide ...read more
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