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For increasing demands of clean and sustainable energy, two-dimensional transition-metal dichalcogenides (2D-TMDs) have attracted great attention. Electrocatalysis, photoelectrochemical water splitting and photovoltaic activities are considered a suitable route for fulfilling this demand.Here, we have used hydrothermally synthesized vanadium sulfide (VS 4 ) and molybdenum disulfide (MoS 2 ) composite heterostructures for photocatalytic based renewable energy production. The catalytic activity of VS 4 observed for the water splitting process makes it a potential candidate for the applications. At the same time, it suffers from photogener-ated charge recombination and photocorrosion which limits its catalytic performances. The key motivation of this work was to diminish the charge recombination via appropriate composite formation with MoS 2 as well as to minimize the photocorrosion of resulting materials with the support of reduced graphene oxide (rGO). Eventually, separation of photogenerated charge carriers and anti-photocorrosion property of the VS 4 -MoS 2 -rGO based composite leads to its efficient catalyst for photocatalytic water splitting applications. The resulting composite shows 4.5 times higher catalytic activity and stability than bare constituent materials.

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