Summary of RhB adsorption capabilities of literature reported activated carbons.

Sample	Synthesis method	Adsorption condition (temperature, initial concentration, contact time)	Capacity/mg g−1	Reference
CP-AC	Mineral-assisted chem-physical activation	298 K, 200 mg L −1 , 4 h	881.2	This work
HHT–ZHT–[2]P	Physico-chemical activation with ZnCl2 and CO2	Not mentioned, 1000 mg L−1, not mentioned	714	54
1v4-600N	H3PO4 activation	293 K, 150 mg L−1, 12 h	833	55
AC-SA	H3PO4 activation	298 K, 400 mg L−1, 12 h	629.8	56
MPSC	Surfactant-templating method	303 K, 400 mg L−1, 24 h	785	57
OPAC	H3PO4 activation	293 K, 500 mg L−1, 5 h	522.11	58
PCNS–4–4	Hydrothermal method with ZnCl2 activation (glucose as carbon source)	298 K, 250 mg L−1, 6 h	617.8	59
C-3.5	Electrospinning with surfactant-templating method	298 K, 600 mg L−1, 24 h	469	60
PK-AC	H3PO4 activation	293 K, 600 mg L−1, 6 h	413.9	61
OAC	ZnCl2 activation	318 K, 100 mg L−1, 10 h	409.84	62
PA-LSAC	H3PO4 activation	295 K, 100 mg L−1, 6 h	384.62	63
AC	H3PO4 activation	298 K, 100 mg L−1, 1.5 h	333.33	64
Co-OMC	SBA-15 templating method	298 K, 200 mg L−1, 25 min	468	65
BPH	H3PO4 activation	293 K, 600 mg L−1, 4 h	373.8	66
LAC	KOH activation	323 K, 250 mg L−1, 100 min	121.95	67
AC(H2O)	Steam activation	298 K, 20 mg L−1, 6 h	221.82	68
EAC	ZnCl2 activation	298 K, 500 mg L−1, 3 h	325.3	69