Title: Study on preparation and antibacterial property of Cu/TiO<inf>2</inf> composite nanoparticles
Abstract: Cu/TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> composite nanoparticles were prepared by photoreduction deposition methods. The properties of the nanoparticles were widely characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) equipped with energy dispersive X-ray spectroscopy (EDS). Moreover, the antibacterial performances were performed by zone of inhibition (ZOI) tests against the bacteria species. The results suggested that the pH value had great influence on the properties of Cu/TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> composite nanoparticles. Cu element tends to exist as Cu <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O when the pH is high, but Cu element does as pure Cu phase when pH value is low. With the increase of UV irradiation time, Cu phases are subsequently oxidized to Cu <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O, and the amount of Cu <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O in composite nanoparticles increased. The antibacterial activities of composite nanoparticles against Staphylococcus aureus are well and enhanced with the increase of the Cu <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O amount. The synergistic effect was found between Cu and TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> .
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 1
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