Strategic Design of Heterojunction CdS Photocatalysts for Solar Hydrogen -- Encapsulation for improving the efficiencies of solar cells  -- Photocatalytic Solar Hydrogen Production: Current Status and Future Challenges -- Electrochemical and optical characterization of materials band structure -- New p-type Semiconducting Metal Oxides for Solar-to-Fuel Conversion: Investigation and Challenges -- Theoretical modeling of photoelectrochemistry related oxide-photocatalysts -- Photo-fuel cells. An alternative route for solar energy conversion -- Simultaneous Photodegradation and Hydrogen Production With TiO2/Pt/CdS Using UV-visible Light in the Presence of a Sacrificial Agent and a Pollutant --  Stability of the β-Bi2O3 Nanoporous Photoanodes for Solar Water Splitting --  Passivating the Surface of TiO2 Photoelectrodes with Nb2O5 and Al2O3 for High-efficiency Dye-Sensitized Solar Cells -- Reduction of Carbon dioxide- Photo-catalytic Route to Solar Fuels.