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학술발표회초록보기

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  • 02월 26일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제115회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Proton-Coupled Electron Transfer Reactions of Metal Nanoparticles Anchored on Metal Oxide Surface

등록일
2015년 2월 12일 16시 48분 54초
접수번호
2043
발표코드
ANAL.O-43 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 11시 : 24분
발표형식
구두발표
발표분야
분석화학 - Oral Presentation of Young Analytical Chemists
저자 및
공동저자
이용진, 이동일*
연세대학교 화학과, Korea
Noble metal nanoparticles (metal = Au, Ag, Pd, and Pt) anchored on the surface of semiconductor nanoparticles show catalytic activities for the reduction of azobenzene and CO2. In azobenzene photocatalytic reduction, the ZnO composite coated with Pd nanoparticles showed the highest reduction activity, followed by Pt, Au and Ag, but the catalytic activity of bare ZnO was found to be negligible. Through the product analysis of the photocatalytic reactions, it was found that azobenzene was reduced to hydrazobenzene via proton-coupled electron transfer reaction. This tendency of metal effect can be elucidated by the proton binding tendency of metals in the composites that controls the proton-coupled electron transfer reaction. Another proton-coupled electron transfer reaction, namely reduction of carbon dioxide, is also performed. In this case, CO2 reduction experiments were conducted with metal/TiO2 composite colloids under light (> 320 nm) in aqueous solution (pH 1). The products of CO2 reduction were analyzed by GC-MS from the headspace and solution of the catalysis reactor and were found to be propane and acetaldehyde.

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