Can excess CO2 energy travel, be carried, or float outside the earth's atmosphere toward space?

Unlikely, because CO2 is a heavy gas.

The CO2 molecule is heavier than the oxygen molecule, and close to that of the nitrogen molecule. Thus it is very unlikely to rise and escape, the way hydrogen and helium do. This is a major reason why Earth has far less H2 or He than a massive planet like Jupiter..

well if it carries on that long maby, if everybody doesent die by then of the heat.

No what keeps it here is the same thing that keeps the atmosphere itself here, gravity.

no damn gravity holds it in....... DAAAAAAMN U GRAVITY!!!