Nanomaterials describe, in principle, materials of which a single unit is sized (in at least one dimension) between 1 to 1000 nanometres (10−9 meter) but usually is 1 to 100 nm (the usual definition of nanoscale).
Hydrogen production from renewable sources is an important step toward reducing carbon dioxide emissions. An EU-funded project seeks to improve the process of extracting hydrogen from wet biomass.