Photosynthetic hydrogen production with cyanobacteria

Photosynthetic hydrogen production using cyanobacteria harnesses these microorganisms’ natural ability to use light energy to split water, channeling some of the resulting electrons to hydrogenase or nitrogenase enzymes that reduce protons to molecular hydrogen, effectively turning sunlight, water, and CO₂ into a storable fuel.[1][2] In the reported study, cyanobacteria are used as living catalysts in an electrochemical device where their photosynthetic machinery provides electrons to hydrogenases under conditions that maintain enzyme activity, enabling sustained hydrogen evolution.[1][2]