Table 2. Literature Comparison of the Latest Carbonaceous Materials Utilized for CO₂ Adsorption with BUGC.

nanomaterial	temperature (K)/pressure (bar)	CO2 uptake (mmol/g)	references
casein-derived porous carbon-2	273/1	5.30	(1)
chemically activated carbon-S	273/1	5.50	(34)
	298/1	4.28
oxygen-functionalized mesoporous carbon	273/1	4.16	(35)
	298/1	2.32
asphaltene-derived activated carbon	298/4	7.56	(36)
amine-functionalized mesoporous silica @ RG	273/1	3.64	(37)
	298/1	2.33
corn husk oat hull kraft pulp	298/1	0.90	(38)
	298/1	1.27
	298/1	2.11
soya-derived doped carbon (900,1000)	298/1	2.7	(39)
	298/1	3.2
hierarchical porous N-doped carbon	298/1	3.4	(40)
nitrogen-doped activated porous carbon	273/1	5.6	(41)
	298/1	4.3
N-doped porous CNF (NiO/PCNF)	273/1	2.46	(42)
	298/1	1.78
N-containing pitch-based activated carbons	273/1	4.93	(43)
	298/1	2.57
biordered ultramicroporous graphitic carbon (BUGC)	273/1	7.81	This work
	298/1	4.46