Study of Photocatalytic Activity and Properties of Transition Metal Ions Doped Nanocrystalline TiO2 Prepared by Sol-Gel Method
| Autor: | Kirit Siddhapara, D. V. Shah |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Dopant Article Subject General Engineering Nanoparticle Nanocrystalline material Metal Transition metal visual_art visual_art.visual_art_medium Photocatalysis lcsh:TA401-492 General Materials Science lcsh:Materials of engineering and construction. Mechanics of materials Photodegradation Nuclear chemistry Sol-gel |
| Zdroj: | Advances in Materials Science and Engineering, Vol 2014 (2014) |
| ISSN: | 1687-8434 |
| DOI: | 10.1155/2014/462198 |
| Popis: | Transition metal (Mn, Fe, Co,) doped TiO2nanoparticles were synthesized by the sol-gel method. All the prepared samples were calcined at different temperatures like 200°C to 800°C and characterized by X-ray diffraction (XRD) and energy dispersive X-ray (EDX) analysis. The studies revealed that transition metal (TM) doped nanoparticles have smaller crystalline size and higher surface area than pure TiO2. Dopant ions in the TiO2structure caused significant absorption shift into the visible region. The results of photodegradation of formaldehyde in aqueous medium under UV light showed that photocatalytic activity of TiO2nanoparticles was significantly enhanced by the presence of some transition metal ions. Chemical oxygen demand (COD) of formaldehyde solutions done at regular intervals gave a good idea about mineralization of formaldehyde. |
| Databáze: | OpenAIRE |
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