Thermogravimetric and UV–vis spectroscopic studies of chromium redox reactions in rutile pigments

In this study undoped and Cr, Sb or Mo doped TiO2 were synthesized by polymeric precursor method and characterized by X-ray diffraction, UV–VIS spectroscopy, infrared spectroscopy and thermogravimetry (TG). The TG curves showed a continuous mass loss assigned to the hydroxyl elimination and Cr6? re...

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Principais autores: Vieira, Fagner Ticiano Gomes, Souza, Soraia C., Oliveira, A. L. M., Lima, Severino Jackson Guedes, Silva, Elson Longo da, Paskocimas, Carlos Alberto, Soledade, Luiz Edmundo Bastos, Souza, Antônio Gouveia de, Santos, Ieda Maria Garcia dos
Formato: article
Idioma:English
Publicado em: Springer
Assuntos:
Pechini
Thermal analysis
TiO2
Redox reactions
Endereço do item:https://repositorio.ufrn.br/handle/123456789/32185
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spelling ri-123456789-321852021-04-18T09:06:04Z Thermogravimetric and UV–vis spectroscopic studies of chromium redox reactions in rutile pigments Vieira, Fagner Ticiano Gomes Souza, Soraia C. Oliveira, A. L. M. Lima, Severino Jackson Guedes Silva, Elson Longo da Paskocimas, Carlos Alberto Soledade, Luiz Edmundo Bastos Souza, Antônio Gouveia de Santos, Ieda Maria Garcia dos Pechini Thermal analysis TiO2 Redox reactions In this study undoped and Cr, Sb or Mo doped TiO2 were synthesized by polymeric precursor method and characterized by X-ray diffraction, UV–VIS spectroscopy, infrared spectroscopy and thermogravimetry (TG). The TG curves showed a continuous mass loss assigned to the hydroxyl elimination and Cr6? reduction. Doped TiO2 samples showed a higher mass loss assigned to water and gas elimination at lower temperatures. In these doped materials a decrease in the anatase–rutile phase transition temperature was observed. After calcination at 1,000 C, rutile was obtained as a single phase material without the presence of Cr6? 2021-04-13T13:37:12Z 2021-04-13T13:37:12Z 2009-06-24 article VIEIRA, F. T. G.; SOUZA, Soraia C.; OLIVEIRA, A. L. M.; LIMA, S. J. G.; LONGO, E.; PASKOCIMAS, C. A.; SOLEDADE, L. E. B.; SOUZA, A. G.; SANTOS, Iêda M. G.. Thermogravimetric and UV–vis spectroscopic studies of chromium redox reactions in rutile pigments. Journal of Thermal Analysis And Calorimetry, [S.L.], v. 97, n. 1, p. 99-103, 24 jun. 2009. Disponível em: https://link.springer.com/article/10.1007%2Fs10973-009-0074-8. Acesso em: 08 mar. 2021. http://dx.doi.org/10.1007/s10973-009-0074-8. 1388-6150 1572-8943 10.1007/s10973-009-0074-8 https://repositorio.ufrn.br/handle/123456789/32185 en Attribution-NonCommercial 3.0 Brazil http://creativecommons.org/licenses/by-nc/3.0/br/ application/pdf Springer
institution Repositório Institucional
collection RI - UFRN
language English
topic Pechini
Thermal analysis
TiO2
Redox reactions
spellingShingle Pechini
Thermal analysis
TiO2
Redox reactions
Vieira, Fagner Ticiano Gomes
Souza, Soraia C.
Oliveira, A. L. M.
Lima, Severino Jackson Guedes
Silva, Elson Longo da
Paskocimas, Carlos Alberto
Soledade, Luiz Edmundo Bastos
Souza, Antônio Gouveia de
Santos, Ieda Maria Garcia dos
Thermogravimetric and UV–vis spectroscopic studies of chromium redox reactions in rutile pigments
description In this study undoped and Cr, Sb or Mo doped TiO2 were synthesized by polymeric precursor method and characterized by X-ray diffraction, UV–VIS spectroscopy, infrared spectroscopy and thermogravimetry (TG). The TG curves showed a continuous mass loss assigned to the hydroxyl elimination and Cr6? reduction. Doped TiO2 samples showed a higher mass loss assigned to water and gas elimination at lower temperatures. In these doped materials a decrease in the anatase–rutile phase transition temperature was observed. After calcination at 1,000 C, rutile was obtained as a single phase material without the presence of Cr6?
format article
author Vieira, Fagner Ticiano Gomes
Souza, Soraia C.
Oliveira, A. L. M.
Lima, Severino Jackson Guedes
Silva, Elson Longo da
Paskocimas, Carlos Alberto
Soledade, Luiz Edmundo Bastos
Souza, Antônio Gouveia de
Santos, Ieda Maria Garcia dos
author_facet Vieira, Fagner Ticiano Gomes
Souza, Soraia C.
Oliveira, A. L. M.
Lima, Severino Jackson Guedes
Silva, Elson Longo da
Paskocimas, Carlos Alberto
Soledade, Luiz Edmundo Bastos
Souza, Antônio Gouveia de
Santos, Ieda Maria Garcia dos
author_sort Vieira, Fagner Ticiano Gomes
title Thermogravimetric and UV–vis spectroscopic studies of chromium redox reactions in rutile pigments
title_short Thermogravimetric and UV–vis spectroscopic studies of chromium redox reactions in rutile pigments
title_full Thermogravimetric and UV–vis spectroscopic studies of chromium redox reactions in rutile pigments
title_fullStr Thermogravimetric and UV–vis spectroscopic studies of chromium redox reactions in rutile pigments
title_full_unstemmed Thermogravimetric and UV–vis spectroscopic studies of chromium redox reactions in rutile pigments
title_sort thermogravimetric and uv–vis spectroscopic studies of chromium redox reactions in rutile pigments
publisher Springer
publishDate 2021
url https://repositorio.ufrn.br/handle/123456789/32185
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