We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
XPS AND TPR STUDY OF SOL-GEL DERIVED M/TiO<sub>2</sub> POWDERS (M=Co, Cu, Mn, Ni).
- Authors
Petrik, I. S.; Krylova, G. V.; Kelyp, O. O.; Lutsenko, L. V.; Smirnova, N. P.; Oleksenko, L. P.
- Abstract
Produced by templated sol-gel method mesoporous nanosized titania powders modified with 3d-metal ions have been characterized by XPS and TPR methods. Metal species formed on the titania surface were investigated. The TPR analysis showed that reduction behaviors of the Mn+/TiO2 were strongly affected by the synthesis method, preparation conditions and interactions between the dopant metal and TiO2 matrix. It was found that Ti-O-M- bonds formation during sol-gel synthesis with applying nonionic triblock copolymer Pluronic P123 as organic template and calcination at 550 °C promoted high-dispersion states of doped 5 % metals. The XPS and TPR showing dopants exist as divalent and trivalent ions for Mn+/TiO2, where M=Co, Ni, Mn, and as monovalent and divalent ions in the case of Cu/TiO2.
- Subjects
X-ray photoelectron spectra; TITANIUM dioxide; DOPING agents (Chemistry); CARBENES; POLYMERS
- Publication
Chemistry, Physics & Technology of Surface / Khimiya, Fizyka ta Tekhnologiya Poverhni, 2015, Vol 6, Issue 2, p179
- ISSN
2079-1704
- Publication type
Article
- DOI
10.15407/hftp06.02.179