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WS2 moiré superlattices derived from mechanical flexibility for hydrogen evolution reaction
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WS2 moiré superlattices derived from mechanical flexibility for hydrogen evolution reaction
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Journal Article
WS2 moiré superlattices derived from mechanical flexibility for hydrogen evolution reaction
2021
Overview
The discovery of moiré superlattices (MSLs) opened an era in the research of ‘twistronics’. Engineering MSLs and realizing unique emergent properties are key challenges. Herein, we demonstrate an effective synthetic strategy to fabricate MSLs based on mechanical flexibility of WS
2
nanobelts by a facile one-step hydrothermal method. Unlike previous MSLs typically created through stacking monolayers together with complicated method, WS
2
MSLs reported here could be obtained directly during synthesis of nanobelts driven by the mechanical instability. Emergent properties are found including superior conductivity, special superaerophobicity and superhydrophilicity, and strongly enhanced electro-catalytic activity when we apply ‘twistronics’ to the field of catalytic hydrogen production. Theoretical calculations show that such excellent catalytic performance could be attributed to a closer to thermoneutral hydrogen adsorption free energy value of twisted bilayers active sites. Our findings provide an exciting opportunity to design advanced WS
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catalysts through moiré superlattice engineering based on mechanical flexibility.
Expanding the available materials with moiré superlattices is interesting but also challenging. Here the authors use a one-step hydrothermal approach to synthesis WS
2
moiré superlattices with high catalytic activity for hydrogen evolution reaction
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
