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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/41083
Title: 
Thermogravimetric and UV-vis spectroscopic studies of chromium redox reactions in rutile pigments
Author(s): 
Institution: 
  • Universidade Federal da Paraíba (UFPB)
  • Universidade Estadual Paulista (UNESP)
  • Universidade Federal do Rio Grande do Norte (UFRN)
ISSN: 
1388-6150
Abstract: 
In this study undoped and Cr, Sb or Mo doped TiO(2) 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 Cr(6+) reduction. Doped TiO(2) 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 A degrees C, rutile was obtained as a single phase material without the presence of Cr(6+).
Issue Date: 
1-Jul-2009
Citation: 
Journal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 97, n. 1, p. 99-103, 2009.
Time Duration: 
99-103
Publisher: 
Springer
Keywords: 
  • Pechini
  • Thermal analysis
  • TiO(2)
  • Redox reactions
Source: 
http://dx.doi.org/10.1007/s10973-009-0074-8
URI: 
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/41083
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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