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학술발표회초록보기

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  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Nanoporous TiO2/SiO2 prepared by atomic layer deposition as adsorbents of methylene blue in aqueous solutions

등록일
2012년 2월 13일 17시 25분 41초
접수번호
0181
발표코드
PHYS.P-291 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 25일 (수요일) 18:00~21:00
발표형식
포스터
발표분야
물리화학
저자 및
공동저자
서현욱, 김영독
성균관대학교 화학과, Korea
TiO2 films supported by porous SiO2 with high surface area were synthesized by atomic layer deposition (ALD). Porous structure of SiO2 could be maintained even after deposition of TiO2 using 500 ALD cycles. All the TiO2-covered SiO2 samples showed comparable methylene blue (MB) adsorption abilities to that of bare ones. Moreover, MB adsorption capability of TiO2/SiO2 was almost fully recovered by simple re-annealing process, whereas MB adsorption capacity of bare SiO2 was not fully recovered by the same treatment. FT-IR study demonstrated that thermal decomposition of adsorbed MB molecules was much facilitated in the presence of TiO2 films, hence preventing deposition of surface-bound species created on the adsorbents surface during the thermal treatment process. Photocatalytic activity of TiO2/SiO2 samples was also investigated as a function of TiO2 film thickness, and the result will be discussed.

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