1. Enhanced reactivity of peroxo-modified surface of titanium dioxide nanoparticles used to synthesize ultrafine bismuth titanate powders at lower temperatures
- Author
-
L.P. Gonçalves, Edson R. Leite, Luiz Fernando Gorup, Lucas S. Ribeiro, Emerson R. Camargo, FN Souza Neto, A.M. Kubo, P. Francatto, and André E. Nogueira
- Subjects
Exothermic reaction ,Reaction mechanism ,Materials science ,Process Chemistry and Technology ,Bismuth titanate ,Metallurgy ,chemistry.chemical_element ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Peroxide ,0104 chemical sciences ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,chemistry.chemical_compound ,chemistry ,Chemical engineering ,Materials Chemistry ,Ceramics and Composites ,Reactivity (chemistry) ,Particle size ,0210 nano-technology ,Hydrogen peroxide ,Titanium - Abstract
Bismuth titanate with sillenite structure (Bi 12 TiO 20 ) was prepared at lower temperatures and shorter times using a modified oxidant peroxide method (OPM). Bi 12 TiO 20 was synthesized utilizing commercial Bi 2 O 3 and reactive titanium dioxide nanoparticles having peroxo-modified surfaces. Rather than depending on particle size, the reaction mechanism is related to the highly exothermic decomposition of peroxo groups, regardless the titanium source used, which locally releases a large amount of energy that can accelerate the reaction, similar to self-propagating high temperature routes (SHS).
- Published
- 2016
- Full Text
- View/download PDF