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제114회 대한화학회 학술발표회, 총회 및 기기전시회 One-Pot Synthesis and Electrocatalytic Properties of Pd@Pt Core-Shell Nanocrystals with Tailored Morphologies

등록일
2014년 8월 28일 15시 06분 18초
접수번호
1045
발표코드
MAT.P-1111 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 15일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
재료화학
저자 및
공동저자
김예나, 한상우*
한국과학기술원(KAIST) 화학과, Korea
A direct one-pot synthesis method for the production of core-shell nanocrystals with tailored core and shell structures can offer a convenient and valuable approach to the development of promising nanocrystal-based catalysts for diverse applications. In the present work, we developed a new facile aqueous one-pot synthesis method for the generation of Pd@Pt core-shell nanocrystals consisting of well-defined Pd nanocube cores and dendritic Pt shells, which was realized by the temporal separation of the Pd core and Pt shell formation through the controlled reduction kinetics of metal precursors. The thickness of the Pt shell in the Pd@Pt nanocrystals could also be manipulated by controlling the molar ratio of the Pt and Pd precursors in the reaction solutions. The prepared Pd@Pt nanocrystals exhibited efficient catalytic activity and stability toward methanol electrooxidation, and their catalytic function was highly dependent on their Pt shell thickness due to the different synergism between Pt and Pd. We envision that this work will pave the way to designing novel metal nanostructures with unprecedented morphologies and functions.

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