Issue 20, 2017

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

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.

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

Supplementary files

Article information

Article type
Communication
Submitted
09 Mar 2017
Accepted
30 Apr 2017
First published
03 May 2017

Nanoscale, 2017,9, 6638-6642

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

S. Iqbal, Z. Pan and K. Zhou, Nanoscale, 2017, 9, 6638 DOI: 10.1039/C7NR01705G

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