Publications

Nanoparticles (NPs) have been considered as an active research area because of its excellent physical and chemical properties. These properties based on the size, shape and composition of NPs. In this work, Ag NPs and Cu NPs are prepared by double arc discharge method applying stabilized ac current between three rods. The synthesized NPs were applied using discharge currents (15 and 30A) which submerged in deionized water at room temperature without any heat exchanger, vacuum or gas handling equipment. The morphology and crystal structure were studied. X-ray diffraction (XRD) showed that Ag NPs and Cu NPs are crystalline in nature with a face-centered cubic (fcc) structure while the sizes are 19.60 nm 32.97 nm respectively.TEM image of the Ag NPs shows narrow size distribution with 8–12 nm mean particle size. While for Cu NPs is spherical shape and in the range from 23 nm to 43 nm. EDX analysis is in good agreement with TEM and XRD results and insured that all the obtained materials are 100% Ag NPs and Cu NPs. Antibacterial activities of Ag NPs and Cu NPs were investigated using Escherichia coli bacteria. The results showed that these NPs act as antimicrobial agents in order to enhance antimicrobial activity of them.