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Visible-Light-Driven Photocatalytic Degradation of 1,4-Dioxane Using Semiconductor Nanoparticles

등록일
2008년 2월 14일 11시 54분 38초
접수번호
1346
발표코드
29P10포 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 <발표Ⅰ>
발표형식
포스터
발표분야
물리화학
저자 및
공동저자
박원일, 김한성, 장동명, 명윤, 조진우, 박정희, 민병권1
고려대학교 소재화학과,
1한국과학기술연구원 청정에너지연구센터,
Visible-light-driven photocatalysis has the attractive potential application for the conversion of solar energy into chemical energy and for the degradation of toxic water pollutants. One of well-known water pollutants is 1,4-dioxane that has been widely used as industrial solvent and a stabilizer for chorinated solvent. However, the efficiency of those UV-light-driven photocatalytic systems is rather dismal because the more intense region of the solar spectrum is around ~2.6 eV. Yet, a solution to the photocatalysts with high visible light activity remains a challenge. In this study, the photocatalytic degradation of 1,4-dioxane has been activated by β-Cu2S, ZnS, CdS, and CdSe nanoparticles, showing a great efficiency of β-Cu2S nanoparticles under visible irradiation. The quenching efficiency of photoluminescence has been correlated with photocatalytic degradation. The major intermediate is found to be ethylene glycol diformate. Hybrid nanostructure of β-Cu2S nanoparticles and carbon nanotubes shows the enhanced degradation ability via the direct bindings with the efficient electron acceptor carbon nanotubes.

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