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학술발표회초록보기

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  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Observation and Analysis of Stochastic Iridium Oxide (IrOx) Single Nanoparticle Collisions at ultramicroelectrode

등록일
2012년 2월 7일 13시 59분 35초
접수번호
0082
발표코드
ELEC2-5 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 16시 : 45분
발표형식
심포지엄
발표분야
전기화학 - New trends in electrochemistry
저자 및
공동저자
권성중, Allen J. Bard1
건국대학교 화학과, Korea
1University of Texas at Austin, United States

We describe the electrochemical detection of single iridium oxide nanoparticle (IrOx NP) collision at a less catalytic electrode surface such as the NaBH4-treated Pt or the bare Au. We could observe the single NP collision through the enhanced current by electrocatalytic redox recycling. The overall current transient consists of repeated current spikes, superimposed on a current decay to reach a steady-state value. The current responses were caused by random individual events as a function of time rather than the usual continuous current caused by an ensemble of a large number of events. The treatment of stochastic electrochemistry like single NP collisions is different from the usual model for ensemble-based electrochemical behavior. Models for the observed responses are discussed, including simulations, and the height and frequency of the peak current are investigated.


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