Enhanced photocatalytic hydrogen evolution from in situ formation of few-layered MoS2 /CdS nanosheet-based van der Waals heterostructures

Nanoscale
Shahid IqbalKebin Zhou

Abstract

Here we report for the first time that the H2 bubbles generated by photocatalytic water splitting are effective in the layer-by-layer exfoliation of MoS2 nanocrystals (NCs) into few layers. The as-obtained few layers can be in situ assembled with CdS nanosheets (NSs) into van der Waals heterostructures (vdWHs) of few-layered MoS2/CdS NSs which, in turn, are effective in charge separation and transfer, leading to enhanced photocatalytic H2 production activity. The few-layered MoS2/CdS vdWHs exhibited a H2 evolution rate of 140 mmol g(CdS)-1 h-1 and achieved an apparent quantum yield of 66% at 420 nm.

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Citations

Apr 17, 2019·Advanced Science·Juan SuJie-Sheng Chen
Sep 26, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Xuanbo ZhouXin Jiang
May 21, 2020·Materials·Felix CarrascosoAndres Castellanos-Gomez

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