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).
Increasing concerns about rising atmospheric carbon dioxide (CO2) levels prompted scientists to explore ways of converting this greenhouse gas into fuels and organic materials using light.
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