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Hydrogen generation via photoelectrochemical water splitting using chemically exfoliated MoS<sub>2</sub> layers

Cited 45 time in Web of Science Cited 46 time in Scopus
Authors

Joshi, R. K.; Shukla, S.; Saxena, S.; Lee, G. -H.; Sahajwalla, V.; Alwarappan, S.

Issue Date
2016-01
Publisher
American Institute of Physics Inc.
Citation
AIP Advances, Vol.6 No.1, p. 015315
Abstract
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) MoS2, which acts as an efficient photocatalyst. The film of chemically exfoliated MoS2 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 MoS2 film resulted in hydrogen evolution. Our work shows that 2D MoS2 is one of the promising candidates as a photocatalyst for light-induced hydrogen generation. High photoelectrocatalytic efficiency of the 2D MoS2 shows a new way toward hydrogen generation, which is one of the renewable energy sources. The efficient photoelectrocatalytic property of the 2D MoS2 is possibly due to availability of catalytically active edge sites together with minimal stacking that favors the electron transfer. (C) 2016 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
ISSN
2158-3226
URI
https://hdl.handle.net/10371/203519
DOI
https://doi.org/10.1063/1.4941062
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  • College of Engineering
  • Department of Materials Science & Engineering
Research Area 2D materials, 2차원 물질, Smiconductor process, semiconductor devices, 반도체 공정, 반도체 소자

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