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  • 09월 05일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제120회 대한화학회 학술발표회, 총회 및 기기전시회 안내 For improving electrocatalitic activity of refluxed graphene oxide(Re-G-O) Co(acac)2 anchored on the Re-G-O for oxygen reduction reaction

등록일
2017년 8월 24일 10시 17분 43초
접수번호
1420
발표코드
ELEC.P-470 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 20일 (금요일) 13:00~14:30
발표형식
포스터
발표분야
Electrochemistry
저자 및
공동저자
Yunseok Shin, Sungjin Park*
Department of Chemistry, Inha University, Korea
Organometallic complexes and carbon-based materials hybridization has been shown to enhance the catalytic performance in the oxygen reduction reaction (ORR). As chemical interactions between the metal centers and ligands are critical factors determining their tunable catalytic nature, it is important to understand the correlation between the chemical structure and catalytic performance of the hybrids. In this work, we synthesized the hybrids by the reaction of an organometallic complex Co(II)(acac)2 (acac = acetylacetonate), with refluxed graphene oxide (Re-G-O) materials containing controlled amounts of oxygen atoms at room temperature. Experimental characterization of the hybrids reveals that Co(II)(acac)2 is coordinated to oxygen containing groups in Re-G-O, generating organometallic species, Co–O4–O. These hybrids showed better electrocatalytic activity for the ORR in alkaline media than Co-free Re-G-O materials. The results show that the Co–O4 species is catalytically active for the ORR. We find that the best Co–O4 catalyst for the ORR is produced by the use of reduced graphene oxide with a medium level of reduction.

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