The book focuses on the direct production of hydrogen, using solar energy. Photocatalytic water-splitting by exposing semiconductors to sunlight is one of the most promising routes. The range of materials and other non-electrolytic methods are also reviewed The book references 205 original resources and includes their direct web link for in-depth reading. Keywords: Water-Splitting, Hydrogen Production, Solar Energy Conversion, Photocatalytic Water-Splitting,...