# CO2 conversion to a harmless gas like oxygen [duplicate]

I am doing some research about indoor purifiers and I was wondering if there is any approach to purify co2 or convert it to harmless gases like oxygen just like what plants do.

• You could use sodium peroxide: $\ce{2Na2O2 +2 CO2 -> 2Na2CO3 + O2}$ Jul 14, 2016 at 19:59
• Plants do the job pretty well: why not use them? Besides carbon dioxide isn't harmful in the quantities normally found in the atmosphere (you produce it when you breathe). Only when there is a lot more than normal levels does it become a problem for living things which have adapted to low levels because they produce it. Jul 14, 2016 at 20:09