Artículos de revistas
Optical properties of the MoO3-TiO2 particulate system and its use as a ceramic pigment
Fecha
2013-09-03Registro en:
Particulate Science and Technology, v. 31, n. 5, p. 466-473, 2013.
0272-6351
1548-0046
10.1080/02726351.2013.773388
WOS:000322212400005
2-s2.0-84881300877
Autor
State University of Ponta Grossa
Research and Development Department
Universidade Estadual Paulista (Unesp)
Institución
Resumen
Mo-doped TiO2 powders were prepared using a dry mixture of TiO2 and MoO3 oxides with several compositions, followed by a calcination step at several temperatures. The resulting oxide system develops yellow and green tones. The XRD patterns showed only traces of MoO 3; however, EDS results, combined with TG/DTA data, confirmed the presence of molybdenum ions, suggesting that the changes in optical properties of the oxide system is due to the incorporation of Mo ions into the TiO 2 matrix, substituting Ti+4 with Mo+6 ions. The band gap decreased with increasing of MoO3 content; on the other hand, the band gap reached a maximum value at about 850°C to 910°C when plotted as a function of the calcination temperature. The glazes produced showed that the oxide system under study is a potential material for use as abinary ceramic pigment. Copyright © 2013 Taylor & Francis Group, LLC.