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  • 09월 03일 23시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제122회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Two-dimensional Transition Dichalcogenide Nanosheets for Photoelectrochemical Hydrogen Production.

등록일
2018년 8월 16일 22시 00분 05초
접수번호
0282
발표코드
MAT.P-336 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 18일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Material Chemistry
저자 및
공동저자
Jisun Yoo, Jeunghee Park*
Department of Materials Chemistry, Korea University, Korea
Photocatalysts for hydrogen evolution reactions (HER) are central to key renewable energy technologies of water splitting. Despite tremendous effort, the development of low-cost electrode catalysts with high activity remains a great challenge. In this study, we report the transition metal dichalcogenide (TMD) layered two-dimensional (2D) nanosheets as excellent photocatalysts for water-splitting reactions. We fabricated a Si-based photocathode by depositing the TMDs nanosheets such as MoS2, MoSe2, MoTe2, etc., onto an p-type Si nanowire array, showing efficient photoelectrochemical (PEC) hydrogen evolution under visible light irradiation. Band alignment suggested that the efficiency of the PEC cell is ascribed to the buildup of the space charge region in the heterojunction, as well as the band bending of Si at the electrolyte interface.

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