Elements

Morphology

Adsorption Isotherm

Adsorption Capacity, mg/g

Reference

Graphene-coated Fe₂O₃

Iron oxide nanoparticles with graphitic carbon coating

Freundlich

352.1

[16]

GO/chitosan/ferrite

Nanocomposite

Langmuir

270.3

[16]

α-Fe₂O₃

Nanocomposite

Freundlich

-

[81]

FeOOH /AlOOH

/MultiWall Carbon NanoTubes

Nanoparticles

Langmuir

-

[57]

MMCs: MIL-100 (Fe)

Iron oxide magnetic particles;

Freundlich

45

[82]

Fe₃O₄/ grapheme

Nanocomposite

Langmuir

280.6

[16]

PAN–CNT/TiO₂^–NH₂

Composite nanofibers

714.27

[9]

Fe₃O⁴/polyacrylonitrile

Fibrous morphology

Langmuir

684.9

[16]

h-BN@5%Pani hybrid composite

Hybrid composite

Langmuir

133.34

[56]

[16] Fe₃O₄

Nanoparticle

Freundlich

11.13

[49]

MnO₂/Fe₃O₄/O⁻MWCNT

Nanocomposite

Langmuir

186.9

[16]

a-MnO₂⁻NH₂⁻rGO

Hybrid

Freundlich

307.0

[16]