Hydrogen: A Future Chemical Fuel.- Introduction to Hydrogen and World Energy Scenario.- Electrochemical Water Splitting: H2 Evolution Reaction.- Design of Biomimetic Photocatalysts for the Solar Hydrogen Generation: An Overview.- Plasmonic Photocatalysts for Water splitting.- Monoclinic BiVO4-based Photoanodes for Photoelectrochemical Water Splitting.- Defects Enriched Transition Metal Oxides towards Photo-electrochemical water splitting.- Photoelectrochemical Water Splitting with Nitride-based Photoelectrodes.- Nanomaterial Assisted Photoelectrochemical Water Splitting.- Solar Hydrogen Production using III-Nitride Nanowire Photoelectrode.