Hydrogen generation via photoelectrochemical water splitting using chemically exfoliated MoS{sub 2} layers
- Centre for Sustainable Materials Research and Technology, School of Materials Science and Engineering, University of New South Wales, NSW 2052 (Australia)
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Mumbai (India)
- Department of Material Science and Engineering, Yonsei University, Seoul 120-749 (Korea, Republic of)
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.
- OSTI ID:
- 22492421
- Journal Information:
- AIP Advances, Vol. 6, Issue 1; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AVAILABILITY
CATALYSTS
ELECTROCHEMISTRY
ELECTRON TRANSFER
FILMS
HYDROGEN
INTERSTITIAL HYDROGEN GENERATION
LAYERS
MOLYBDENUM SULFIDES
PHOTOCHEMISTRY
PHOTOCURRENTS
RENEWABLE ENERGY SOURCES
TWO-DIMENSIONAL SYSTEMS
VISIBLE RADIATION
WATER