Production of Green Hydrogen through Photocatalysis
Manoj Kumar, Neeraj Kumar Singh, Ruplappara Sharath Kumar, Rajesh Singh
Abstract
Hydrogen production from water sources using sunlight energy and catalysts has recently been found to be an ideal future fuel. Renewable biomass degradation and water splitting into molecular hydrogen is a practical, sustainable, economical, promising, and environmentally-friendly technology. The photocatalysis hydrogen (H 2 ) process targets the intensification of solar energy for electrolysis, yielding oxygen/hydrogen (O 2 /H 2 ). Integration of the catalysis process has been recently studied to scale up the process by optimization of the reactor design parameter, material, or operational parameter. This chapter mainly discusses the basic principle of green hydrogen production by photocatalysis techniques by examining its features. The precise scale-up production techniques with photochemical technological developments with their limitations are discussed. Various photobioreactors designed for the scalable production of green hydrogen have been summarized. Critical challenges, prospects, and the requirements for producing H 2 are also highlighted.