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학술발표회초록보기

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  • 09월 06일 15시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제112회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Electrochemically reduced graphene oxide and horseradish peroxidase deposited pencil graphite electrode for the detection of hydrogen peroxide

등록일
2013년 8월 29일 16시 57분 31초
접수번호
1189
발표코드
ELEC.P-1172 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 16일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
전기화학
저자 및
공동저자
천경주, THIRUMALAI DINAKARAN1, 박덕수2, 장승철*
부산대학교 바이오피지오센서연구소, Korea
1부산대학교 바이오피지오 센서 연구소, Korea
2부산대학교 바이오피지오연구소, Korea
A new disposable biosensor based on the electrochemically pretreated pencil graphite electrode (PGE) for the determination of hydrogen peroxide (H2O2) has been developed. The disposable biosensors were constructed by using direct electrochemical immobilization of horseradish peroxidase (HRP) with in situ electrochemical reduction of graphene oxide (ErGO-HRP-PGE) on commercial graphite pencil leads. Before performing the electrochemical in situ immobilization, the PGE was electrochemically pretreated in 0.1M phosphoric acid solution by potential cycling between -0.3 V and +2.0 V. It was found that the electrochemical treatment could improve the redox characteristics of PGE and the with pretreatment showed improved sensitivity to H2O2 compared with the results obtained from non-pretreated GPE. The detailed characteristics of the ErGo-HRP-PGE were evaluated and the experimental parameters are optimized by using cyclic voltammetry and chronoamperometry. The optimized results obtained will be presented in the poster.

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