Effect of annealing temperature on the phase transition, structural stability and photo-electrochemical performance of TiO 2 multi-leg nanotubes
| Autor: | Somnath C. Roy, Y. Rambabu, Manu Jaiswal |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Diffraction
Photocurrent Phase transition Materials science Phonon Annealing (metallurgy) Nanotechnology 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis 0104 chemical sciences Condensed Matter::Materials Science symbols.namesake Chemical engineering Rutile symbols Crystallite 0210 nano-technology Raman spectroscopy |
| Zdroj: | Catalysis Today. 278:255-261 |
| ISSN: | 0920-5861 |
| Popis: | In this report we study the effect of annealing temperature on the structural stability, phase transformation and photo-electrochemical performance of TiO 2 multi-leg nanotubes. Multi-leg nanotubes were synthesized using electrochemical anodization method, and as synthesized nanotubes were annealed in air at the temperatures ranging from 500 to 900 °C.We observed that multi-leg morphology is preserved upto 900 °C and a dominant rutile phase is observed at this temperature. X-ray diffraction and Raman spectra measurements were carried out to study the crystallite size, phase transformation and phonon confinement effects. The multi-leg nanotubes annealed at 900 °C shows enhanced photo-electrochemical performance; this is attributed to mixed phase, increase in crystallite size and decrease in defects. |
| Databáze: | OpenAIRE |
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