Recently, various nano-scale materials including silver nanoparticles have actively been studied for their effective prevention of bacterial growth. It is important to enhance antibacterial properties of nanomaterials while maintaining their biocompatible characteristics. Engineering of nanostructures by conjugating different dimensional (nanodots and nanotubes, for example) may help keeping nanomartirials' safety and increasing their target-specific bacterial mortality. Multi-walled carbon nanotubes (MWCNTs) were treated with acids in several steps to decorate them with silver (Ag) nanoparticles. Chemical reduction of Ag cations by ethanol solution on the acid treated MWCNTs produced nanoparticles around the nanotubes [1]. The synthesized complexes, Ag-MWCNTs, were characterized by transmission electron microscopy (TEM), X-ray diffractometery (XRD), energy-dispersive X-ray (EDS) and evaluated for their antibacterial function against Methylobacterium and Sphingomonas. The biocompatibility of Ag-MWCNTs co-cultured with human peripheral mononuclear cells was measured by the MTT assay.In sum, the minimum amount of Ag-MWCNTs effectively killing the bacteria was assessed and that concentration showed no harmful influences on the human cells.

Antibacterial activity and cytoxicity test of multi-walled carbon nanotubes decorated with silver nanoparticles

248th National Meeting (2014)

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