Proceedings of the Korean Vacuum Society Conference (한국진공학회:학술대회논문집)
- 2013.08a
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- Pages.257-257
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- 2013
PDMS (Polydimethylsilioxane)-Coated Silica Nanoparticles for Selective Removal of Oil and Organic Compound from Water
- Cho, Youn Kyoung (Department of Chemistry, Sungkyunkwan University) ;
- Kim, Dae Han (Department of Chemistry, Sungkyunkwan University) ;
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Yoon, Hye Soo
(Department of Chemistry, Sungkyunkwan University) ;
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Jeong, Bora
(Department of Chemistry, Sungkyunkwan University) ;
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Kim, Young Dok
(Department of Chemistry, Sungkyunkwan University)
- Published : 2013.08.21
Abstract
In order to selectively remove oil and organic compound from water, silica nanoparticles with hydrophobic coating was used. Since silica nanoparticles are generally hydrophilic, removal efficiency of oil and organic compound, such as toluene, in water can be decreased due to competitive adsorption with water. In order to increase the removal efficiency of oil and toluene, hydrophobic polydimethylsiloxane (PDMS) was coated on silica nanoparticles in the form of thin film. Hydrophobic property of the PDMS-coated silica nanoparticles and hydrophilic silica nanoparticles were easily confirmed by putting it in the water, hydrophilic particle sinks but hydrophobic particle floats. PDMS coated silica nanoparticles were dispersed on a slide glass with epoxy glue on and the water contact angle on the surface was determined to be over