Nano Structures for Energy Storage and Conversion and their Application as Catalysts for Photochemistry and Sensing examines various aspects of those nanostructures that are used as catalysts for photochemistry and sensing. It includes a description about nanoparticles, photoelectrochemical and photochemical solar hydrogen generation. Provides the reader with the insights into the development of energy storage and conversion of nano particles and structures, so as to understand the importance of nanoparticles as the best transducer for Electrochemical Biosensor.