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학술발표회초록보기

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  • 08월 18일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제108회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Novel Metal/Metal Oxide Nanoparticle Composites and Their Photocatalytic Activities

등록일
2011년 8월 1일 16시 24분 09초
접수번호
1336
발표코드
Ⅱ-MAT.P-309 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 <발표Ⅱ>
발표형식
포스터
발표분야
재료화학
저자 및
공동저자
김덕한
연세대학교 화학과, Korea
Novel metal/ZnO nanoparticle composites were prepared by modifying ZnO with pre-formed metal nanoparticles protected with thiol ligand. In this approach, the metal nanoparticles such as Au and Ag nanoparticles were highly monodisperse and their loading on ZnO surface could be precisely controlled by the anchoring conditions. The composites exhibited strongly enhanced photocatalytic activity without requiring thermal activation process in degrading organic substrates in both oxidative and reductive pathways. A clear correlation between the photocatalytic activity and the Au loading was found for both oxidative and reductive photocatalytic reactions. These results demonstrate that ligand-protected Au nanoparticles can significantly enhance the charge separation by extracting electrons from the photoexcited ZnO and consequently improve the photocatalytic activity of the composites. The influence of metal on the photocatalytic activity will also be discussed.

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