News Column

Reports Summarize Photocatalytics Findings from University of Malaya

January 31, 2014



By a News Reporter-Staff News Editor at Science Letter -- A new study on Photocatalytics is now available. According to news reporting out of Kuala Lumpur, Malaysia, by NewsRx editors, research stated, "Copper (Cu) containing coatings can provide sustainable protection against microbial contamination. However, metallic Cu coatings have not been widely used due to the relatively high cost, poor corrosion resistance, and low compatibility with non-metal substrates."

Our news journalists obtained a quote from the research from the University of Malaya, "Titanium dioxide (TiO2) possesses antibacterial functions by its photocatalytic properties which can destroy bacteria or suppress their reproduction. TiO2 also has the function of improving the mechanical properties through particle dispersion strengthening. We have recently developed an innovative polymer based coating system containing fine particles of Cu and TiO2 nanoparticles. These polymer based coatings simultaneously display excellent antimicrobial and good mechanical properties. The results showed that the addition of TiO2 has improved the antimicrobial property under sunlight, which provides extended applications in outdoor environment. The elimination of 106 bacterial by contacting the coatings without TiO2 needs 5 h, while contacting with the Cu/TiO2-1 wt.% TiO2 took only 2 h to kill the same amount of bacteria. The coatings also presented enhanced hardness and wear resistance after adding TiO2. The width of wear track decreased from 270 mu m of the Cu-polymer coating to 206 mu m of Cu/TiO2-polymer coatings with 10 wt.% TiO2."

According to the news editors, the research concluded: "Synchrotron Infrared Microscopy was used to in-situ and in-vivo study the bacteria killing process at the molecular level."

For more information on this research see: Photocatalytic TiO2 nanoparticles enhanced polymer antimicrobial coating. Applied Surface Science, 2014;290():274-279. Applied Surface Science can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Applied Surface Science - www.elsevier.com/wps/product/cws_home/505669)

Our news journalists report that additional information may be obtained by contacting X.J. Wei, Univ Malaya, Dept. of Mech Engn, Kuala Lumpur 50603, Malaysia. Additional authors for this research include Z.D. Yang, S.L. Tay and W. Gao (see also Photocatalytics).

Keywords for this news article include: Asia, Malaysia, Kuala Lumpur, Nanoparticle, Photocatalyst, Nanotechnology, Emerging Technologies

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


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Source: Science Letter


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