Transition metal ions effect on the properties and photocatalytic activity of nanocrystalline TiO2 prepared in an ionic liquid
TiO(2) and transition metal (Cr, Mn, Fe, Co, Ni, Cu, and Zn) doped TiO(2) nanoparticles were synthesized by the sol-gel method using 2-hydroxylethylammonium formate as an ionic liquid. All the prepared samples were calcined at 500 degrees C and characterized by X-ray diffraction (XRD), BET surface a...
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| Veröffentlicht in: | Journal of hazardous materials 2009-12, Vol.172 (2-3), p.1573-1578 |
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| container_issue | 2-3 |
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| container_title | Journal of hazardous materials |
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| creator | Ghasemi, S Rahimnejad, S Setayesh, S Rahman Rohani, S Gholami, M R |
| description | TiO(2) and transition metal (Cr, Mn, Fe, Co, Ni, Cu, and Zn) doped TiO(2) nanoparticles were synthesized by the sol-gel method using 2-hydroxylethylammonium formate as an ionic liquid. All the prepared samples were calcined at 500 degrees C and characterized by X-ray diffraction (XRD), BET surface area determination, energy dispersive X-ray (EDX) analysis, diffuse reflectance spectroscopy (DRS), and Fourier transformed infrared (FT-IR) techniques. The studies revealed that transition metal (TM) doped nanoparticles have smaller crystalline size and higher surface area than pure TiO(2). Dopant ions in the TiO(2) structure caused significant absorption shift into the visible region. The results of photodegradation of Acid Blue92 (AB92) in aqueous medium under UV light showed that photocatalytic activity of TiO(2) nanoparticles was significantly enhanced by the presence of some transition metal ions. Chemical Oxygen Demand (COD) of dye solutions were done at regular intervals gave a good idea about mineralization of dye. |
| doi_str_mv | 10.1016/j.jhazmat.2009.08.029 |
| format | Article |
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All the prepared samples were calcined at 500 degrees C and characterized by X-ray diffraction (XRD), BET surface area determination, energy dispersive X-ray (EDX) analysis, diffuse reflectance spectroscopy (DRS), and Fourier transformed infrared (FT-IR) techniques. The studies revealed that transition metal (TM) doped nanoparticles have smaller crystalline size and higher surface area than pure TiO(2). Dopant ions in the TiO(2) structure caused significant absorption shift into the visible region. The results of photodegradation of Acid Blue92 (AB92) in aqueous medium under UV light showed that photocatalytic activity of TiO(2) nanoparticles was significantly enhanced by the presence of some transition metal ions. 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| identifier | ISSN: 0304-3894 |
| ispartof | Journal of hazardous materials, 2009-12, Vol.172 (2-3), p.1573-1578 |
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| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals Collection |
| subjects | Catalysis Coloring Agents - chemistry Coloring Agents - radiation effects Crystallization Ionic Liquids - chemistry Nanoparticles - chemistry Photochemical Processes Titanium - chemistry Transition Elements - chemistry Ultraviolet Rays Water Pollutants, Chemical - chemistry Water Pollutants, Chemical - radiation effects Water Purification - methods |
| title | Transition metal ions effect on the properties and photocatalytic activity of nanocrystalline TiO2 prepared in an ionic liquid |
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