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Novel silver nanoparticles: synthesis, properties and applications
by Anh-Tuan Le, Pham Thanh Huy, Le Thi Tam, Phuong Dinh Tam, Nguyen Van Hieu, Tran Quang Huy
International Journal of Nanotechnology (IJNT), Vol. 8, No. 3/4/5, 2011
Abstract: In this paper, we present versatile and effective techniques to synthesise silver nanoparticles (Ag-NPs)-based compounds such as colloidal silver nanoparticles (CSNPs) and silver nanoparticles powders (SNPPs). The CSNPs stabilised by a surfactant oleic acid were produced for the first time through the reduction of [Ag(NH3)2]+(aq) complex by glucose with UV irradiation treatment, while the SNPPs were formed by thermal decomposition of silver-oleate complex at 330°C for 1 h. The CNPPs and CSNPs with average diameters (~9–10 nm) and highly stableaqueous dispersions were obtained. Noticeably, these synthesised Ag-NPs exhibited an excellent antibacterial activity against gram-negative Escherichia coli (ATCC 43888-O157:k-:H7) and methicillin-resistant gram-positive Staphylococcus aureus (ATCC 43300) bacteria. The electron microscopic technique provided deeper insights on the interaction and bactericidal mechanism of the Ag-NPs. Potential applications of the synthesised CSNPs and SNPPs for antibacterial – masterbatchs, acrylic emulsion paint as well as coating layer on cotton textiles were demonstrated.
Online publication date: Fri, 21-Jan-2011
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