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| Type |
Poster Presentation |
| Area |
Material Chemistry |
| Room No. |
Grand Ballroom |
| Time |
10월 18일 (목요일) 11:00~12:30 |
| Code |
MAT.P-333 |
| Subject |
Two Dimensional MoS2 Meets Porphyrin via Intercalation: Phase Conversion to 1T’ to Enhance Catalytic Activity Toward Hydrogen Evolution |
| Authors |
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
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| Abstract |
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. |
| E-mail |
bbuli12@korea.ac.kr |
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122nd General Meeting of the KCS