Table 2.
Comparison of hybrid titania nanostructures for the adsorption of arsenic.
| Materials | Particle size (nm) | Surface area (m2/g) | pH | Adsorption capacity (mg/g) | Forms of Arsenic | References |
|---|---|---|---|---|---|---|
| Hydrous TiO2 | 3–8 | 312 | 7.0 9.0 |
83 96 |
As(III) | [56] |
| Hydrous TiO2 | 10.8 mm | 280 | 4.0 4.0 |
33.4 31.8 |
As(V) As(III) |
[57] |
| Granular TiO2 | 0.15–0.6 mm | 250.7 | 7.0 | 41.4 32.4 |
As(V) As(III) |
[58] |
| CHTO | 0.14–0.29 mm | 163.6 | 7.0 | 72–75 g/kg | As(III) | [57] |
| TICB | … | 0.56 | 7.0 | 2050 μg/g 2099 μg/g |
As(V) As(III) |
[59] |
| TICB under UV-light | … | 3.06 | 7.0 | 2988 μg/g 3536 μg/g |
As(V) As(III) |
[60] |
| TNTs | 2–6 | 312 | 7.0 3.0 |
60 208 |
As(III) As(V) |
[62] |
| TiO2-CNTs | 2.7 | 196 | 7.0 | 1.8 1.3 |
As (III) As (V) |
[63] |
| TiO2/MMT Dark |
1.83–4 | 176.4 | 7.0 | 4.58 4.86 |
As(III As(V) |
[66] |
| TiO2/MMT UV |
… | … | … | 5.19 5.16 |
As(III) As(V) |
… |
Abbreviations: CHTO, crystalline hydrous titanium oxide; TICB, titania impregnated chitosan bead; TNTs, titania nanotubes CNTs, carbon nanotubes; MMT, monotomrolonite.