Comparison of IC adsorption capacities for several sorbents.

Adsorbents	Synthesis methods	Surface area (m2 g−1)	Adsorption capacity (mg g−1)	Ref.
MgFe2O4	Sol–gel	28.8	46	64
Activated carbon	Commercial	1250.3	79.49	65
Mesoporous Mg/Fe	Sol–gel	85.6	62.8	66
Carbon nanotube	Chemical vapor deposition	74.2	88.5	67
COOH–CNT	Chemical vapor deposition	145.9	136	67
Silver nanoparticle	Green reduction	—	73.05	68
Fe3O4 nanoparticles	Bio-synthesis	78.61	99.71	69
Cobalt hydroxide nanoparticles	Co-precipitation	—	62.5	70
MgOBi2	Co-precipitation	12.2	126	Current work