Hydrogen gas is considered as an ideal reliable and clean fuel for transportation. When compare with other combustible fuels   hydrogen possesses a high energy density (140 MJkg^-1) and the end product of this reaction is only water that can be reusable. Growing energy demand prompts for the developments in production techniques, the storage of hydrogen and its transport. Although great progress has been made in H₂ storage and transport, the utilization of H₂ energy is stymied by the lack of inexpensive and efficient production methods. Hydrogen can be produced in different ways that include, stream-methane reforming of natural gas, coal gasification and biomass conversion. These methods are expensive, and in particular, these methods produce greenhouse gases during the reaction which is not favoured to the environment. An attractive alternative technique called water-splitting is considered as one of the suitable and greener ways for producing hydrogen energy, and the technology of water splitting becomes mature day by day. Recently, there are different semiconductor materials have been utilized as the catalyst for photocatalytic hydrogen production through water splitting. In our studies, various metalchalcogenide materials combined with TiO₂, such as CoS₂/TiO₂ and SnS₂/TiO₂ nanocomposites, were synthesized by a facile method and used as a photocatalyst which produced comparable amount of hydrogen through water splitting under extended solar irradiation. These studies lay down a new approach for developing novel photocatalytic materials that can effectively harness solar energy for hydrogen production.

Keywords: Photocatalyst, water splitting, hydrogen, nanocomposite, solar energy