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제122회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Two Dimensional MoS2 Meets Porphyrin via Intercalation: Phase Conversion to 1T’ to Enhance Catalytic Activity Toward Hydrogen Evolution

등록일
2018년 8월 16일 22시 00분 03초
접수번호
0278
발표코드
MAT.P-333 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 18일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Material Chemistry
저자 및
공동저자
Ik Seon Kwon, InHye Kwak, Yeron Lee, Gabin Jung, Jeunghee Park1,*
Micro Device Engineering / Microdevices, Korea University, Korea
1Department of Materials Chemistry, Korea University, Korea
The intercalation of porphyrin molecules between MoS2 layers was found to efficiently induce the phase conversion to 1T’ MoS2. The Mn-porphyrin is intercalated preferentially with the Mn(III) cations. The resultant Mn-porphyrin-MoS2 exhibit excellent catalytic activity toward the hydrogen evolution reaction, with a Tafel slope of 35 mV dec-1 and 10 mA cm-2 at an overpotential of 0.125 V. Spin-polarized density functional theory calculations confirmed that the intercalation of Mn-porphyrin into 1T’ MoS2 is quite favorable due to strong charge transfer. In the Volmer reaction step, the active sites are identified as S atoms of MoS2 located just above the Mn center.

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