abs

학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Four electron involved O2 reduction reaction catalyzed by highly active multi walled carbon nanotubes-platinum nanocomposite in acidic media

등록일
2012년 2월 15일 09시 54분 28초
접수번호
0376
발표코드
ELEC.P-1230 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 25일 (수요일) 18:00~21:00
발표형식
포스터
발표분야
전기화학
저자 및
공동저자
Mohammad Shamsuddin, 김대근, 전승원
전남대학교 화학과, Korea
The electrocatalyst for reduction of dioxygen (O2) has been synthesized and employed as doping agent. The surface of multi walled carbon nanotubes (MWCNT) was modified by platinum (Pt) in the chemical process. The O2 reduction had done by several MWCNT-Pt modified glassy carbon electrode (GCE), denoted as MWCNT-Pt/GCE. The synthesis of MWCNT-Pt nanoparticles matrix was investigated by XPS, TEM and EDX. The electrocatalytic reduction of O2 was investigated via cyclic voltammetry (CV), and rotating ring disk electrode (RRDE) techniques in 0.1 mol L-1 HClO4 aqueous solutions. The electrocatalytic reduction of O2 at the MWCNT-Pt/GCE established a pathway of two and/or four-electron transfer reduction to hydrogen peroxide (H2O2) and H2O respectively. Especially, hydrodynamic voltammetry revealed the modified electrode was catalyzed effectively by the 4 electron reduction of dioxygen to H2O and the minimal generation of H2O2 in the process of O2 reduction. The MWCNT-Pt showed the significant efficient electrocatalytic performance. It was found that MWCNT-Pt was an effective mediator for the reduction of dioxygen and responsible for the enhanced catalytic activity.

상단으로