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  • 02월 28일 19시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제111회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Sponge-like Nanoporous Pd and Pd/Au Structures: Facile Synthesis and Enhanced Electrocatalysts

등록일
2013년 2월 14일 16시 34분 59초
접수번호
1218
발표코드
ELEC.P-1127 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 17일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
전기화학
저자 및
공동저자
손정우, 심준호*
대구대학교 화학·응용화학과, Korea
Palladium and palladium/gold based nanocatalysts have been investigated extensively as a key component for a variety of research fields such as environmental protection, electrochemical sensors, and fuel cells. In this study, sponge-like nanoporous Pd (snPd) and Pd/Au (snPd/Au) were prepared by a galvanic replacement reaction between a hierarchical Co nanostructure, which was fabricated on the glassy carbon substrate by cyclic voltammetric deposition of Co2+ ions, and K2PdCl4 (or HAuCl4). The electrocatalytic activities of the prepared films were evaluated for oxygen reduction reaction (ORR) using rotating disk electrode (RDE) experiments in alkaline (0.1 M NaOH) conditions. Due to the increased active surface area, the nanoporous catalysts exhibited superior ORR activity (i.e., more positive onset and half-wave potentials, higher current density and greater number of electrons transferred) than commercial catalysts. This research was supported by the Daegu University Research Grant, 2012.

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