Table 1.

BET specific surface area (SSA), micropore volume (V_m), room-temperature CO₂ uptake, and CO₂/N₂ selectivity of all the nZDCs before and after acid treatment (represented by a and c) and nZIF-8.

Sample	SSA	Vm	CO2 uptake at 25 °C [mmol g−1]	S
	[m2 g−1]	[cm3 g−1]	0.15 bar	1.0 bar	20.0 bar
ZIF-8	1700	0.52	0.09	0.70	7.80	11
600a	517	0.15	1.08	2.24	4.77	35
700a	494	0.17	1.01	2.43	4.40	34
800a	616	0.20	1.17	2.78	5.99	30
900a	834	0.29	1.24	3.35	8.16	24
1000a	1292	0.44	1.04	3.31	10.06	18
600c	716	0.25	1.09	2.66	6.48	62
700c	950	0.35	1.40	3.51	7.82	79
800c	922	0.31	1.22	3.27	7.70	29
900c	925	0.34	1.10	3.21	7.80	25
1000c	1222	0.43	0.99	3.22	10.21	22