Hydrogen generation via photoelectrochemical water splitting using chemically exfoliated MoS{sub 2} layers

Study on hydrogen generation has been of huge interest due to increasing demand for new energy sources. Photoelectrochemical reaction by catalysts was proposed as a promising technique for hydrogen generation. Herein, we report the hydrogen generation via photoelectrochecmial reaction using films of...

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Bibliographic Details
Published in:AIP advances 2016-01, Vol.6 (1)
Main Authors: Joshi, R. K., Sahajwalla, V., Shukla, S., Saxena, S., Lee, G.-H., Alwarappan, S.
Format: Article
Language:English
Subjects:
AVAILABILITY
CATALYSTS
ELECTROCHEMISTRY
ELECTRON TRANSFER
HYDROGEN
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
INTERSTITIAL HYDROGEN GENERATION
LAYERS
MATERIALS SCIENCE
MOLYBDENUM SULFIDES
PHOTOCHEMISTRY
PHOTOCURRENTS
RENEWABLE ENERGY SOURCES
TWO-DIMENSIONAL SYSTEMS
VISIBLE RADIATION
WATER
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Summary:Study on hydrogen generation has been of huge interest due to increasing demand for new energy sources. Photoelectrochemical reaction by catalysts was proposed as a promising technique for hydrogen generation. Herein, we report the hydrogen generation via photoelectrochecmial reaction using films of exfoliated 2-dimensional (2D) MoS{sub 2}, which acts as an efficient photocatalyst. The film of chemically exfoliated MoS{sub 2} layers was employed for water splitting, leading to hydrogen generation. The amount of hydrogen was qualitatively monitored by observing overpressure of a water container. The high photo-current generated by MoS{sub 2} film resulted in hydrogen evolution. Our work shows that 2D MoS{sub 2} is one of the promising candidates as a photocatalyst for light-induced hydrogen generation. High photoelectrocatalytic efficiency of the 2D MoS{sub 2} shows a new way toward hydrogen generation, which is one of the renewable energy sources. The efficient photoelectrocatalytic property of the 2D MoS{sub 2} is possibly due to availability of catalytically active edge sites together with minimal stacking that favors the electron transfer.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.4941062