Research Article
Study of Photocatalytic Activity and Properties of Transition Metal Ions Doped Nanocrystalline TiO2 Prepared by Sol-Gel Method
Table 2
COD data of Fe, Mn, and Co doped TiO2.
| Sample | Material | COD mg/L |
| A | Formaldehyde + pure TiO2 | 1200 | B | Formaldehyde + 1% Mn doped TiO2 | 1158 | C | Formaldehyde + 2% Mn doped TiO2 | 1058 | D | Formaldehyde + 4% Mn doped TiO2 | 956 | E | Formaldehyde + 1% Co doped TiO2 | 957 | F | 2% Co doped TiO2 | 934 | G | 4% Co doped TiO2 | 815 | H | Formaldehyde + 1% Fe doped TiO2 | 760 | I | 2% Fe doped TiO2 | 720 | J | 4% Fe doped TiO2 | 690 |
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