Nanosized Metal Oxide-Based Adsorbents for Heavy Metal Removal: A Review - Advanced Materials for Agriculture, Food and Environmental Safety - page 246

Adsorbent Method Morphology Target metal Isotherm performance Ref.

TiO 2 Hydrolysis Particles; Diameter, 2.1 nm Zn(II), Cd(II), Langmuir Capacities:15.3(Zn),

7.9(Cd) mg/g

[42]

Commercially Particles; Diameter, 7.5 nm Pb(II), Cd(II),

Ni(II)

- q m = 401.4(Pb),

135.14(Cd),
114.4(Ni)

[43]

ZnO Hydrothermal, Nanosheets with square side

of 1 μm and thickness in
nanoscale

Pb(II) Freundlich 6.7 mg/g [49]

Solvothermal Nanoplates of 15 nm in

thickness

Cu(II) Langmuir 1600 mg/g [50]

Hydrous Al
oxides

Precipitation: NaOH+Al(NO 3 ) Particles; Diameter 1.9 nm Pb(II) - 6.7 mg/g [55]

γ-Al 2 O 3 Precipitation: Particles size 7.5 Ni(II) - 176 mg/g [56]