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Improving water treatment using a novel antibacterial kappa-carrageenan-coated magnetite decorated with silver nanoparticles. | LitMetric

AI Article Synopsis

  • The study developed a new antibacterial agent using silver nanoparticles (AgNPs) embedded in a kappa-carrageenan (KC) base and coated on magnetic iron oxide (FeO) cores for enhanced effectiveness against harmful bacteria in water.
  • The superparamagnetic properties of the FeO cores allow for easy recovery of the nanoparticles from liquids using magnets, maintaining their stability and functionality.
  • Characterization techniques confirmed the successful formation of the nanocomposite, with results indicating better antibacterial activity due to reduced clumping of AgNPs thanks to the KC coating.

Article Abstract

In this study, we aimed to fabricate an enhanced antibacterial agent to act against pathogenic bacteria in aqueous environments. To achieve this, silver nanoparticles (AgNPs) were inlaid on a kappa-carrageenan (KC) base and coated on FeO magnetic cores (FeO@KC@Ag). Superparamagnetic FeO nanoparticles were designed at the center of the composite nanostructure, allowing magnetic recovery from aqueous media in the presence of a magnet. The synthesized nanoconjugate was characterized in each step using XRD, FT-IR, EDX, FE-SEM, TEM, DLS, VSM, and disk-diffusion antibacterial method. Results show that the nanocomposite system is formed, while the magnetic properties remain practically stable. The agglomeration of the AgNPs was decreased by the trap-like function of KC coating, which resulted in an improved antibacterial activity for the FeO@KC@Ag formulation. These findings suggest that FeO@KC@Ag nanocomposites could be promising agents for combating bacterial infections in aqueous environments.

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Source
http://dx.doi.org/10.1007/s11356-023-28804-2DOI Listing

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