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제118회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Enhanced Hydrogen Photoproduction with a Pyrene-pendant Metal Catalysts on Reduced Graphene Oxide

2016년 8월 31일 12시 59분 21초
INOR.P-249 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 13일 (목요일) 11:00~12:30
저자 및
김진흥*, 김수진, 장하윤1, 이주현2, 박유미3, 전유정2
이화여자대학교 화학·나노과학과, Korea
1이화여자대학교 화학.나노과학과, Korea
2이화여자대학교 화학나노과학과, Korea
3이화여자대학교 화학나노과학, Korea
Reduced graphene oxide (rGO), which is highly dispersed in water due to its hydrophilic oxygen functional groups is intensively utilized to prepare efficient systems for optical sensors, catalysts, light antennas, and other applications. Noncovalent ,-stacking interactions of various molecules for the modification of conjugated carbon nanomaterials, such as carbon nanotubes and graphene, have been used to immobilize chemical/biological probes and catalysts. Examples using carbon nanomaterials immobilized with molecular metal catalysts, especially in photocatalytic reactions requiring a wide range of light absorption and an excellent electron transfer process, are relatively rare. The conversion of formic acid/formate in the presence of homogeneous metal catalysts has also been studied for the production of hydrogen. Many catalytic systems using molecular metal complexes have used thermal energy in order to achieve high conversion rates and yields. We present the visible light-driven photoproduction of hydrogen using a pyrene-derivatized rhodium complex anchored on rGO by - stacking interactions. First, we show a surprising enhancement effect of rGO on hydrogen photoproduction with the molecular rhodium catalyst and formate in the presence of PtNPs upon visible light irradiation in an aqueous solution. In addition, the pyrene-pedant Ni catalyst immobilized on rGO shows enhanced photocatalytic hydrogen production.