Table 3.
Evaluation of metal/metal oxide based titania nanocomposites for the removal of arsenic.
| Materials | Particle Size (nm) | Surface Area (m2/g) | pH | Adsorption capacity (mg/g) | Forms of arsenic | References |
|---|---|---|---|---|---|---|
| m- TiO2-αFe2O3 | 26.7 | 95 | 3.0 7.0 |
80% 99% |
As(III) As(V) |
[67] |
| TiO2-Fe2O3 bi-composite | 20 μm | 133.5 | 5.0 7.0 9.0 |
12.4 7.79 6.48 |
As(V) | [68] |
| Fe-TNTs | 8–11 | 162.8 | 2.5 | 80.67 36.41 |
As(V) | [69] |
| NHITO | 7.0–11 | 77.8 | 7.0 7.0 |
85 14.3 |
As(III) As(V) |
[70] |
| RGO-MFT | 20–45 | 275.23 | 6.0 7.0 |
77.6 99.5 |
As(V) As (III) |
[71] |
| FTSZ | 61 nm | 189.2 | 7.0 | As (III) | [72] | |
| Ce-Ti oxide | 100–200 nm | 38.2–68.8 | 6.5 6.5 |
6.8 7.5 |
As (III) As (V) |
[78] |
| Zr-Ti oxide | …… | 114 | 9.0 3.0 |
28.6 | As(III) As (V) |
[80] |
| Ti-BYC | 10–30 nm | 82 | 7.0 | 348.5 | As(V) | [82] |
Abbreviations: TNTs, titania nanotubes; NHITO; Iron (III) titanium (IV) mixed binary oxide; RGO-MFT, reduced graphene oxide/magnetite iron-titania ternary; FTSZ, iron, titania/silica modified with zinc.