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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 photoelectrochecmial reaction using films of exfoliated 2-dimensional (2D) MoS, which acts as an efficient photocatalyst. The film of chemically exfoliated MoS 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 film resulted in hydrogen evolution. Our work shows that 2D MoS is one of the promising candidates as a photocatalyst for light-induced hydrogen generation. High photoelectrocatalytic efficiency of the 2D MoS shows a new way toward hydrogen generation, which is one of the renewable energy sources. The efficient photoelectrocatalytic property of the 2D MoS is possibly due to availability of catalytically active edge sites together with minimal stacking that favors the electron transfer.


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