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나노 구조 물리 연구단
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Activation of Ternary Transition Metal Chalcogenide Basal Planes through Chemical Strain for the Hydrogen Evolution Reaction

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Title
Activation of Ternary Transition Metal Chalcogenide Basal Planes through Chemical Strain for the Hydrogen Evolution Reaction
Author(s)
Yongshin Kim; Anand P. Tiwari; Om Prakash; Hyoyoung Lee
Publication Date
2017-05
Journal
ChemPlusChem, v.82, no.5, pp.785 - 791
Publisher
WILEY-V C H VERLAG GMBH
Abstract
Catalytically inactive basal planes pose challenges for the efficient hydrogen evolution reaction (HER) in two-dimensional (2D) transition metal chalcogenide (TMC) nanosheets. Herein, a new hybrid structure is reported in which zero-dimensional TMC nanodots (NDs) are decorated on the basal planes of 2D nanosheets of TMCs to enhance their catalytic activity towards the HER process. A novel process is developed to fabricate a hybrid Cu2MoS4 (2D ternary transition metal chalcogenide Cu2MoS4 nanosheets)/MoSe2 (0D binary transition metal chalcogenide MoSe2 ND) nanostructure by controlling the size of the MoSe2 NDs to enhance the HER activity. In acidic media, this optimal hybrid Cu2MoS4/MoSe2 nanostructure achieves excellent catalytic activity for HER, which exhibits a low overpotential of 166mV at a current density of 10mAcm(-2), which corresponds to a Tafel slope of 74.7mVdec(-1). In addition, the synthesized hybrid nanostructure shows excellent stability when under acidic medium for 16h of continuous electrolysis. Therefore, it is suggested that our strategy may open a new path for the design of hybrid nanostructures by using ternary transition metal chalcogenides (TTMCs) with binary transition metal chalcogenides (BTMCs) for alternative non-noble metal catalysts towards HER. (c) 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
URI
https://pr.ibs.re.kr/handle/8788114/3708
ISSN
2192-6506
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
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