Abstract
Recently, there has been an increasing need of efficient synthetic protocols using eco-friendly conditions including low costs and green chemicals for production of metal nanoparticles. In this work, silver nanoparticles (silver NPs) with average particle size about 10 nm were synthesized by using a thermal decomposition technique. Unlike the colloidal chemistry method, the thermal decomposition method developed has advantages such as the high crystallinity, single-reaction synthesis, and easy dispersion ability of the synthesized NPs in organic solvents. In a modified synthesis process, we used sodium oleate as a capping agent to modify the surface of silver NPs because the oleate has a C18 tail with a double bond in the middle, therefore, forming a kink which is to be effective for aggregative stability. Importantly, the as-synthesized silver NPs have demonstrated strong antimicrobial effects against various bacteria and fungi strains. Electron microscopic studies reveal physical insights into the interaction and bactericidal mechanism between the prepared silver NPs and tested bacteria in question. The observed excellent antibacterial and antifungal activity of the silver NPs make them ideal for disinfection and biomedicine applications.
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Acknowledgements
This work was supported by Vietnam’s National Foundation for Science and Technology Development (NAFOSTED) through a fundamental research project (code: 106.99-2010.54). The authors also acknowledge the technical supports from Scientific Collaborative Program on Nano-Biomedical Research between the Department of Nanoscience and Nanotechnology at Hanoi University for Science and Technology (HUST) and the National Institute of Hygiene and Epidemiology (NIHE) in Hanoi-Vietnam.
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Tam, L.T., Phan, V.N., Lan, H. et al. Characterization and antimicrobial activity of silver nanoparticles prepared by a thermal decomposition technique. Appl. Phys. A 113, 613–621 (2013). https://doi.org/10.1007/s00339-013-7810-4
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DOI: https://doi.org/10.1007/s00339-013-7810-4