ABSTRACT
Humanity is facing two major challenges and these are renewable energy harvesting methods and maintaining a sustainable environment. One of the most promising solutions to meet the challenge is to convert solar energy to some fuels or electricity. Basically, there are three key processes for utilizing solar energy efciently: (1) maximum photon absorption, (2) efcient charge separation, and (3) effectively utilizing these separated charges. Photocatalysis will have a bright future in coming years, but more focus should be on the development of solar light-activated photocatalysts having higher surface area, so that they can be useful for converting solar energy into electrical or chemical energy.
