abs

학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 02월 26일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제115회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Observation of Iridium Oxide Nanoparticle Collision at Millimeter-Sized Electrode by Drop-Coating Method [IUPAC 포스터상]

등록일
2015년 2월 26일 14시 08분 06초
접수번호
1435
발표코드
ELEC.P-1241 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 15일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
전기화학
저자 및
공동저자
주진우, 권성중*
건국대학교 화학과, Korea
In recent days, The nanoparticles(NPs) with various size, shape and material can be synthesized in interest. Noble metal NPs are studied to be used as catalysts for reaction in fuel cells or solar cells. Studies about catalytic ability of NP are enabled by the Electrocatalytic Amplification(EA method) developed by A. J. Bard. In EA method, dia. 10 ~ 25 μm ultramicroelectrode(UME) was necessary to reduce background current and noise. In this study, we tried to observe the catalytic activity of NP with millimeter-sized electrode. Some of collisions of NP aggregates were observed with Au deposited Si wafer. Then by means of drop-coating method, reproducible amperometric signals were detected. The sigmoidal relationship between concentrations of NPs and frequencies of collisions was fitted. The result can be explained as constant number of aggregates was formed above certain concentration of NP. The integrated areas of peaks also were saturated by limitation of hopping. With this analysis, catalytic ability of NP can be studied with millimeter-sized electrode.

상단으로