is is possible to make captured carbon back into a useful solid form?

Question

For many years now I have wondered why we aren’t able to turn the air captured carbon into useful things like carbon fiber or carbon nanotube batteries. surely there must be some way of doing this through the magic of chemistry.

In: 93

Answer 1

They can make gasoline out of the CO2 in the air but it requires more energy to produce than you get out of it. I think I remember hearing it costs something like $100/gal. I’m sure someone will correct me, but I know it’s a technology that exists.