Table 3.

Estimated permeability coefficients of CO₂ and O₂ through a graphene nanolayer at different R.H. levels.

Permeating Gas	P [mol∙m∙m−2∙Pa−1∙s−1]	P [Barrer]
CO2	8.5 (±0.8) × 10−21	2.5 (±0.2) × 10−5
CO2 @ RH = 0.5	6.6 (±0.9) × 10−21	2.1 (±0.3) × 10−5
CO2 @ RH = 0.8	11.0 (±0.9) × 10−21	3.3 (±0.3) × 10−5
O2	1.3 (±0.1) × 10−21	0.40 (±0.03) × 10−5
O2 @ RH = 0.5	1.0 (±0.2) × 10−21	0.28 (±0.06) × 10−5
O2 @ RH = 0.8	1.3 (±0.2) × 10−21	0.38 (±0.06) × 10−5