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Comparative activities of Titania, Ni-Titania and Co-Titaniain photocatalytic degradation of picric acid dye |
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| รหัสดีโอไอ | |
| Creator | 1. Ezekiel Oluyemi Odebunmi 2. Omolola Titilayo Odeyemi |
| Title | Comparative activities of Titania, Ni-Titania and Co-Titaniain photocatalytic degradation of picric acid dye |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2563 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 42 |
| Journal No. | 5 |
| Page no. | 1147-1155 |
| Keyword | Titania, Cobalt-titania, Nickel-titania, picric acid dye, photocatalysts |
| URL Website | https://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | Titania (TiO2) photocatalyst was synthesized by the sol-gel method involving acid hydrolysis followed by oxidationwith hydrogen peroxide. Cobalt and nickel metal ions were impregnated at 1, 5 or 10 % concentrations using metal nitrate saltsolutions. The photocatalysts were characterized by various techniques. Scanning Electron Microscopy (SEM) and DiffusedReflectance Spectroscopy (DRS) showed that the doped TiO2 were smaller in size and had smaller band gap than pure TiO2,while X-ray Diffraction (XRD) and X-ray Fluorescence (XRF) spectroscopy showed that all the photocatalysts were rutile phaseand contained the expected elements. The percent degradation of Picric acid dye at pH 3, initial dye concentration 10 ppm,catalyst concentration 0.10 g/l, and temperature 55 oC, had rank order: TiO2 < 1 % doped < 5 % doped < 10 % doped TiO2,showing that the photocatalytic activities of the Co-TiO2 and Ni-TiO2 increased with dopant concentration. |
