Thermal study of the anatase–rutile structural transitions in sol–gel synthesized titanium dioxide powders
Titanium dioxide powders were synthesized by the sol–gel process using titanium tetrabutoxide as the precursor. The syntheses were performed in saturated aqueous solutions of KCl, CaCl2, NiCl2 , CoCl2 and MnCl2, and in dimethylformamaide (DMF) and dimethylsulfoxide (DMSO) solutions. The obtained X-...
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| Format: | Article |
| Language: | English |
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Serbian Chemical Society
2005-04-01
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| Series: | Journal of the Serbian Chemical Society |
| Subjects: | |
| Online Access: | http://www.shd.org.yu/HtDocs/SHD/vol70/No4/JSCS_V70_No4-14.pdf |
| _version_ | 1828771370760142848 |
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| author | ROBSON F. DE FARIAS CECILIA C. GUEDES E SILVA THOMAZ A. G. RESTIVO |
| author_facet | ROBSON F. DE FARIAS CECILIA C. GUEDES E SILVA THOMAZ A. G. RESTIVO |
| author_sort | ROBSON F. DE FARIAS |
| collection | DOAJ |
| description | Titanium dioxide powders were synthesized by the sol–gel process using titanium tetrabutoxide as the precursor. The syntheses were performed in saturated aqueous solutions of KCl, CaCl2, NiCl2 , CoCl2 and MnCl2, and in dimethylformamaide (DMF) and dimethylsulfoxide (DMSO) solutions. The obtained X-ray diffraction patterns show that all samples were crystalline (anatase phase) with some minor amounts of a brookite phase. It is worth noting that the anatase phase was obtained independent of any previous or further treatment of the synthesized powder, such as hydrothermal or heat treatment. For the titanium dioxide powders synthesized in saturated aqueous solution of metal chlorides (mean crystallite size = 11 nm), the anatase–rutile transition occurred in the range 455–570 °C, depending on the considered sample, as verified by DTA analysis. In the powders synthesized in DMF or DMSO solutions (means crystallite size = 6 nm), the same structural transition occurred at 485 °C. |
| first_indexed | 2024-12-11T14:24:05Z |
| format | Article |
| id | doaj.art-1b0ea70a9eb54c539427edae5d31c7f6 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 |
| language | English |
| last_indexed | 2024-12-11T14:24:05Z |
| publishDate | 2005-04-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-1b0ea70a9eb54c539427edae5d31c7f62022-12-22T01:02:45ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51392005-04-01704675679Thermal study of the anatase–rutile structural transitions in sol–gel synthesized titanium dioxide powdersROBSON F. DE FARIASCECILIA C. GUEDES E SILVATHOMAZ A. G. RESTIVOTitanium dioxide powders were synthesized by the sol–gel process using titanium tetrabutoxide as the precursor. The syntheses were performed in saturated aqueous solutions of KCl, CaCl2, NiCl2 , CoCl2 and MnCl2, and in dimethylformamaide (DMF) and dimethylsulfoxide (DMSO) solutions. The obtained X-ray diffraction patterns show that all samples were crystalline (anatase phase) with some minor amounts of a brookite phase. It is worth noting that the anatase phase was obtained independent of any previous or further treatment of the synthesized powder, such as hydrothermal or heat treatment. For the titanium dioxide powders synthesized in saturated aqueous solution of metal chlorides (mean crystallite size = 11 nm), the anatase–rutile transition occurred in the range 455–570 °C, depending on the considered sample, as verified by DTA analysis. In the powders synthesized in DMF or DMSO solutions (means crystallite size = 6 nm), the same structural transition occurred at 485 °C.http://www.shd.org.yu/HtDocs/SHD/vol70/No4/JSCS_V70_No4-14.pdfsol–gelanatasetitaniarutile |
| spellingShingle | ROBSON F. DE FARIAS CECILIA C. GUEDES E SILVA THOMAZ A. G. RESTIVO Thermal study of the anatase–rutile structural transitions in sol–gel synthesized titanium dioxide powders Journal of the Serbian Chemical Society sol–gel anatase titania rutile |
| title | Thermal study of the anatase–rutile structural transitions in sol–gel synthesized titanium dioxide powders |
| title_full | Thermal study of the anatase–rutile structural transitions in sol–gel synthesized titanium dioxide powders |
| title_fullStr | Thermal study of the anatase–rutile structural transitions in sol–gel synthesized titanium dioxide powders |
| title_full_unstemmed | Thermal study of the anatase–rutile structural transitions in sol–gel synthesized titanium dioxide powders |
| title_short | Thermal study of the anatase–rutile structural transitions in sol–gel synthesized titanium dioxide powders |
| title_sort | thermal study of the anatase rutile structural transitions in sol gel synthesized titanium dioxide powders |
| topic | sol–gel anatase titania rutile |
| url | http://www.shd.org.yu/HtDocs/SHD/vol70/No4/JSCS_V70_No4-14.pdf |
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