Table 2. Comparison of the Adsorption Capacity of the Composite to MO and CR Dye.

adsorbent	dye	adsorption capacity (mg/g)	references
PbS/ZnO	MO	159	[37]
ZnFe2O4/graphene	MO	2.31	[22]
chitosan/organic rectorite composite	MO	5.56	[38]
polyaniline nano-adsorbent	MO	75.9	[39]
hexagonal-shaped nanoporous carbon	MO	18.8	[40]
modified fly ash with Ca(OH)2/Na2FeO4	MO	23.8	[41]
graphene oxide	MO	16.83	[42]
biochar adsorbent	MO	39.37	[43]
m-CS/c-Fe2O3/MWCNTs	MO	31.52	[44]
PVA/MF	CR	221.43	[45]
CS/CTAB	CR	352.5	[26]
CS-VTM	CR	62.2	[46]
Sn(II)-BDC MOF	CR	95.2	[47]
ZnFe2O4/MgAl-LDH	CR	294.12	[48]