Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Preparation of SiO2/TiO2 Core-Shell Particles Using Large-Size Silica Particles

대구경 실리카 입자를 이용한 실리카/티타니아 코어-쉘 입자의 제조

  • Park, Young-Hun (College of Environment & Applied Chemistry, Kyunghee University) ;
  • Lee, Jae-Won (College of Environment & Applied Chemistry, Kyunghee University) ;
  • Gong, Sungmin (College of Environment & Applied Chemistry, Kyunghee University) ;
  • Kim, Woo-Sik (College of Environment & Applied Chemistry, Kyunghee University) ;
  • Kim, Jinsoo (College of Environment & Applied Chemistry, Kyunghee University)
  • 박영훈 (경희대학교 환경.응용화학대학) ;
  • 이재원 (경희대학교 환경.응용화학대학) ;
  • 공성민 (경희대학교 환경.응용화학대학) ;
  • 김우식 (경희대학교 환경.응용화학대학) ;
  • 김진수 (경희대학교 환경.응용화학대학)
  • Received : 2007.02.02
  • Accepted : 2007.03.16
  • Published : 2007.04.10

Abstract

$SiO_2/TiO_2$ core-shell particles with controlled shell thickness were prepared using large silica particles. The thickness of titania coating layer was varied from 8 nm to 38 nm depending on the number of coating steps from 1 to 3 times. After titania coating, the core-shell particles showed textured surface due to the titania coating layer, resulting in 3~25 times increase of specific surface areas. The properties of titania coated silica particles were characterized by FE-SEM, Zeta potential meter, BET, and XRD.

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Acknowledgement

Supported by : KISTEP

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