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http://dx.doi.org/10.5695/JKISE.2009.42.4.157

Photolytic Characteristics of Ni-TiO2 Composite Coating from Electroless Plating  

Choi, Chul-Young (School of Materials Science and Engineering, Pusan National University)
Han, Gil-Soo (Division of Dongnam Area Technology Service, Korea Institute of Industrial Technology)
Jo, Il-Guk (School of Materials Science and Engineering, Pusan National University)
Kim, Young-Seok (Division of Dongnam Area Technology Service, Korea Institute of Industrial Technology)
Kim, Yang-Do (School of Materials Science and Engineering, Pusan National University)
Publication Information
Journal of the Korean institute of surface engineering / v.42, no.4, 2009 , pp. 157-160 More about this Journal
Abstract
Many fundamental studies have been carried out regarding waste water and hazardous gas treatments technologies using the photolysis effect of $TiO_2$. However, a permanent use of $TiO_2$ particles immobilized using organic or organic-inorganic binders is impossible. In this study, Ni-$TiO_2$ composite coating was produced by electroless plating to trap $TiO_2$ particles in the Ni coating layer. The electroless plating was performed in the bath solutions with three different concentrations of $TiO_2$ particles : 10 g/l, 20 g/l, and 40 g/l. The surface and photolytic characteristics of the coating layer was investigated by the use of SEM, a scratch tester, and an UV-Visible spectrophotometer. The results showed that the amounts of immobilized $TiO_2$ particles and the photolytic rate of the coating increased with the initial content of $TiO_2$ particles in the electroless bath. In addition, the photolytic rate of the Ni-$TiO_2$ composite coating was remarkably promoted by etching process in 10% HCl solution.
Keywords
Electroless plating; Photolysis; Ni-$TiO_2$; Composite coating;
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