Morphology modification of TiO2 nanotubes by controlling the starting material crystallite size for chemical synthesis
- 263 Downloads
TiO2 nanotubes (NTs) were prepared by low-temperature chemical synthesis using anatase TiO2 particles with different crystallite sizes in a NaOH solution followed by water washing and HCl neutralization. The synthesized TiO2 NTs showed diverse morphologies depending on the starting materials. The crystallite size of TiO2 raw materials increased with an increase in annealing temperature, and larger TiO2 NTs, around 31 nm in diameter, were obtained from large raw powder with a crystallite size of 117 nm. X-ray diffraction and Raman spectroscopy revealed that the obtained TiO2 NT exhibited lower crystallinity; however, Raman vibration seems to be more likely than a rutile structure.
KeywordsTiO2 nanotube Low-temperature chemical synthesis Crystallinity Morphology
- Cullity BD (1978) Elements of X-ray diffraction. Addison-Wesley, ReadingGoogle Scholar
- Grant CD, Schwartzberg AM, Smestad GP, Kowalik J, Tolbert LM, Zhang JZ (2002) Characterization of nanocrystalline and thin film TiO2 solar cells with poly(3-undecyl-2,2′-bithiophene) as a sensitizer and hole conductor. J Electroanal Chem 522(1):40–48. doi:10.1016/S0022-0728(01)00715-X CrossRefGoogle Scholar
- Kato S, Masuo F (1964) Studies on the oxidation reaction using titanium oxide as a photocatalyst (I): liquid phase oxidation of tetralin by titanium oxide photocatalyst. Kogyo Kagaku Zasshi 67(8):1136–1140 (in Japanese)Google Scholar
- Kolen’ko YuV, Garshev AV, Churagulov BR, Boujday S, Portes P, Colbeau-Justin C (2005) Photocatalytic activity of sol-gel derived titania converted into nanocrystalline powders by supercritical drying. J Photochem Photobiol A Chem 172(1):19–26. doi:10.1016/j.jphotochem.2004.11.004 CrossRefGoogle Scholar