Titanium-Manganese Oxides. Optical and Photocatalytic Properties
| Authors | L. Kernazhitsky1 , V. Shymanovska1 , T. Gavrilko1, G. Puchkovska1 , V. Naumov1 , T. Khalyavka2, V. Kshnyakin3 , V. Chernyak4 , J. Baran5 |
| Affiliations | 1 Institute of Physics, National Academy of Sciences of Ukraine, 46, Nauki Prosp., 03028, Kyiv, Ukraine 2 Institute for Sorption and Problems of Endoecology, NAS of Ukraine, 13, Gen. Naumov Str., 03164, Kyiv, Ukraine 3 Sumy State University, 2, Rimsky-Korsakov Str., 40007, Sumy, Ukraine 4 Taras Shevchenko National University, 2/5, Acad. Glushkov Prosp., 03122, Kiev, Ukraine 5 Institute of Low Temperature and Structure Research, PAS, 50-950, Wroclaw, Poland |
| Е-mail | puchkov@iop.kiev.ua |
| Issue | Volume 2, Year 2010, Number 2 |
| Dates | Received 28.05.2010, in final form – 29.06.2010 |
| Citation | L. Kernazhitsky, V. Shymanovska, T. Gavrilko, et al. J. Nano- Electron. Phys. 2 No2, 83 (2010) |
| DOI | |
| PACS Number(s) | 61.72.Uj, 71.55.Eq, 78.40.Fy, 82.30.Lp |
| Keywords | Titanium-manganese oxides, Optical properties (22) , Photo-catalysis, Safranine. |
| Annotation |
Nanocrystalline titanium-manganese mixed oxides (ТМО) with the Mn content of 13÷16 % at. were first synthesized by manganese hydroxide precipitation on anatase or rutile particles. The structure, morphology and chemical composition of the samples were characterized using XRD and XRF methods showing that the synthesized mixed oxides are the polydisperse materials of different phase composition containing TiO2, Mn2O3 and MnTiO3. The phase transformations and structure defects of the prepared compounds were characterized by FTIR, FT-FIR, FT-Raman spectroscopies. UV-VIS absorption spectra were investigated in 2,4÷6,0 eV region, and it was revealed that the presence of manganese oxides results in absorption increase and significant red shift of the ТМО absorption edge in comparison with pure TiO2. Photocatalytic activity of pure TiO2, Mn2+-doped TiO2 and ТМО during the photocatalytic decomposition of the safranine dye under UV irradiation was studied. A great improvement of photocatalytic activity is registered for Mn2+-doped TiO2 (anatase and rutile), and rutile-based ТМО sample. |
|
List of References |
Other articles from this number
1) Size Kinetic Effects in Polycrystalline Films [058-074]2) Power Transfer Efficiency in the Inductive RF Ion Source [75-82]
3) Active FEL-Klystrons as Formers of Femto-Second Clusters of Electromagnetic Field. General Description [096-119]
4) Non-Equilibrium Evolutional Thermodynamics of Boundary Friction [120-133]
5) Investigation of Electromagnetic Waves in Prefractal Microstrip Line Systems by the Raleigh Method [134-142]
6) Electromagnetic Wave Scattering by the Coated Impedance Cylinder [143-149]
