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

제115회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Direct electro-deposition of metal catalysts on functionalized insulators

등록일
2015년 2월 26일 14시 31분 12초
접수번호
1440
발표코드
ELEC2-6 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 15시 : 50분
발표형식
심포지엄
발표분야
전기화학 - Electrochemical Research Using Functionalized Electrodes
저자 및
공동저자
이진영, 이재경, 신재호, 정택동*
서울대학교 화학부, Korea
Electrochemistry on a dielectric-layer-modified electrode has a potential to provide new insight and application. Highly n-doped silicon electrode (n+-Si) was modified with 6-nm-thick thermal silicon oxide (SiO2), which is one of the dielectric materials used as gate insulators. Si electrode modified with thermal SiO2 has been known to bring hydrogen-atom-mediated electrochemistry . Several kinds of catalysts are electrodeposited on thermal SiO2, inert supports, by constant potential method. In order to improve affinity between metal catalysts and supports, amine-terminated thermal SiO2 was introduced by silanization. Electrodeposited Palladium (Pd) nanoparticles are more disperse on amine-terminated thermal SiO2 compared to the bare thermal SiO2, looking like grains consisting of numerous small particles. Herein, it is also demonstrated that other bimetallic catalysts can be directly deposited on amine-terminated SiO2/n+-Si electrode by a simple electrochemical method. Direct electro-deposition of metal catalysts on inert supports such as SiO2 can be expected to simplify the manufacture of chemical and biological sensors as well as that of oxide-supported metal catalysts.

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