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Photodegradation of Safranin-O Dye by Au Metal Colloid in Cosmetics  

Han, Moon-Suk (Department of Chemical Engineering, Hanyang University)
Lee, Yong-Geun (Department of Chemical Engineering, Hanyang University)
Lee, Young-Ho (Department of Chemical Engineering, Hanyang University)
Kim, Dae-Wook (Department of Chemical Engineering, Hanyang University)
Oh, Seong-Geun (Department of Chemical Engineering, Hanyang University)
Publication Information
Journal of the Society of Cosmetic Scientists of Korea / v.34, no.2, 2008 , pp. 75-82 More about this Journal
Abstract
In this study, the photocatalysed degradation of safranin-O was investigated using Au colloids. Au metal nanoparticle wasused to eliminate safranin-O fast in solution. Au nanoparticles were prepared reduction method using $Na_2CO_3$ and PVP in aqueous solution. The degradation of safranin-O was examined using a variety of condition such as concentration of Au colloid or Au salt, reaction pH, and reaction time in the presence of UV light and $H_2O_2$. As the concentration of Au colloid increases, the rate of dye degradation increases. The photo-oxidation of the safranin-O was monitored spectrophotometrically. The properties of Au nanoparticles were characterized by UV-Vis spectroscopy. In addition, catalytic capacities of Au nanoparticles were also determined by UV-Vis spectroscopy.
Keywords
Au nanoparticle; dye; degradation; safranin-O; UV-Vis spectroscopy;
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