Effect of cysteamine layer formed on gold surfaces interacting with TiO 2 surfaces

It is investigated that the formation of cysteamine layer on gold surfaces may make an effect on the distribution of either gold particle adsorbed to the TiO 2 surface or vice versa with the adjustment of the electrostatic interactions. The atomic force microscope (AFM) was used to measure the surfa...

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Published in:Current applied physics 2011, 11(3), , pp.498-502
Main Author: Park, Jin-Won
Format: Article
Language:English
Subjects:
AFM
Cysteamine
DLVO theory
Gold surface
TiO 2 surface
물리학
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description It is investigated that the formation of cysteamine layer on gold surfaces may make an effect on the distribution of either gold particle adsorbed to the TiO 2 surface or vice versa with the adjustment of the electrostatic interactions. The atomic force microscope (AFM) was used to measure the surface forces between the surfaces as a function of the salt concentration and pH value. With the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory, the forces were quantitatively analyzed to acquire the surface potential and charge density of the surfaces for each salt concentration and each pH value. The surface potential and charge density dependence on the salt concentration was described with the law of mass action, and the pH dependence was explained with the ionizable groups on the surface.
doi_str_mv 10.1016/j.cap.2010.09.001
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1878-1675
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subjects AFM
Cysteamine
DLVO theory
Gold surface
TiO 2 surface
물리학
title Effect of cysteamine layer formed on gold surfaces interacting with TiO 2 surfaces
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