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New Findings from University of New South Wales Describe Advances in Nanostructures (Synthesis of silver-titanium dioxide nanocomposites for...

September 2, 2014



New Findings from University of New South Wales Describe Advances in Nanostructures (Synthesis of silver-titanium dioxide nanocomposites for antimicrobial applications)

By a News Reporter-Staff News Editor at Life Science Weekly -- Fresh data on Nanostructures are presented in a new report. According to news reporting from Sydney, Australia, by NewsRx journalists, research stated, "Silver-titanium dioxide (Ag-TiO2) nanostructures have attracted increasing attention because of unique functional properties and potential applications in many areas such as photocatalysis, antibacterial, and self-cleaning coatings. In this study, Ag@TiO2 core-shell nanostructures and Ag-decorated TiO2 particles (TiO2@Ag) (the size of these two nanoparticles is ranging from 200-300 nm) have been synthesized by a developed facile but efficient method."

The news correspondents obtained a quote from the research from the University of New South Wales, "These two types of hybrid nanostructures, characterized by various advanced techniques (TEM, XRD, BET and others), exhibit unique functional properties particularly in antibacterial toward Gram negative Escherichia coli, as a case study. Specifically: (i) the TiO2@Ag nanoparticles are superior in bacterial growth inhibition in standard culture conditions (37 A degrees C incubator) to the Ag@TiO2 core-shell ones, in which silver may dominate the antibacterial performance; (ii) while after UV irradiation treatment, the Ag@TiO2 core-shell nanoparticles exhibit better performance in killing grown bacteria than the TiO2@Ag ones, probably because of the Ag cores facilitating charge separation for TiO2, and thus produce more hydroxyl radicals on the surface of the TiO2 particles; and (iii) without UV irradiation, both TiO2@Ag and Ag@TiO2 nanostructures show poor capabilities in killing mature bacteria."

According to the news reporters, the research concluded: "These findings would be useful for designing hybrid metal oxide nanocomposites with desirable functionalities in bioapplications in terms of sterilization, deodorization, and water purification."

For more information on this research see: Synthesis of silver-titanium dioxide nanocomposites for antimicrobial applications. Journal of Nanoparticle Research, 2014;16(8):1-13. Journal of Nanoparticle Research can be contacted at: Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands. (Springer - www.springer.com; Journal of Nanoparticle Research - www.springerlink.com/content/1388-0764/)

Our news journalists report that additional information may be obtained by contacting X.H. Yang, University of New South Wales, Prince Wales Clin Sch, Sydney, NSW 2052, Australia. Additional authors for this research include H.T. Fu, X.C. Wang, J.L. Yang, X.C. Jiang and A.B. Yu (see also Nanostructures).

Keywords for this news article include: Sydney, Chemicals, Chemistry, Light Metals, Nanoparticle, Nanocomposite, Nanostructural, Nanostructures, Nanotechnology, Titanium Dioxide, Emerging Technologies, Australia and New Zealand

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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