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제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Electrochemical determination of dopamine and ascorbic acid using Pd nanoparticles supported on poly(3,4-ethylenedioxythiophene) functionalized graphene

등록일
2014년 8월 28일 14시 00분 38초
접수번호
0933
발표코드
ELEC.P-1227 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 15일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
전기화학
저자 및
공동저자
최주은, 전승원*
전남대학교 화학과, Korea
The electrochemical sensor based on poly(3,4-ethylenedioxythiophene) functionalized reduced graphene oxide with palladium nanoparticles (Pd/PEDOT/rGO) was constructed to simultaneously determine small biomolecules such as dopamine (DA) and ascorbic acid (AA). The structural features of the catalyst were characterized by transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX) and X-ray photoelectron spectroscopy (XPS). Electrochemical determination of dopamine (DA) and ascorbic acid (AA) have been studied at a modified glassy carbon electrode (GCE) in 0.1 M phosphate buffer solution (PBS) using cyclic voltammetry (CV), differential pulse voltammetry (DPV) and amperometric response at pH 7.4. Linear analytical curves were obtained in ranges from 2.0 ×10-6 to 2.0 × 10-4 M and 2.0 ×10-6 to 4.8 ×10-3 for DA and AA, respectively. The low detection limit for DA and AA were 4.7 × 10-7 and 1.5 × 10-6 M, as well as no interference was observed from the common interfering species such as glucose, uric acid, serotonin.

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