The effects of morphological changes on the vibrational properties of self-organized TiO2 nanotubes

This paper reports the synthesis of TiO2 nanotubes by anodic process. The effects of different electrolyte concentrations on the morphological, structural and vibrational properties of TiO2 nanotubes were studied. Scanning electron microscopy images showed that nanotube inner diameter ranging from 1...

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Published inThin solid films Vol. 520; no. 2; pp. 807 - 812
Main Authors YAM, F. K, BEH, K. P, NG, S. W, HASSAN, Z
Format Conference Proceeding Journal Article
LanguageEnglish
Published Amsterdam Elsevier 01.11.2011
Subjects
Anatase
Anodic
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science; rheology
Diffraction
Electrolytes
Exact sciences and technology
Materials science
Nanoscale materials and structures: fabrication and characterization
Nanotubes
Physics
Structure and morphology; thickness
Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties)
Thin film structure and morphology
Thin films
Titanium dioxide
Characterizations
Scanning electron microscopy
Raman spectra
Annealing
Titanium dioxide nanotubes
Morphological changes
Anatase
Pore structure
Nanotubes
XRD
Dissolution
Anodization
Self organization
Quantity ratio
Anodizing
Titanium
Electrolytes
Titanium oxide
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Summary:This paper reports the synthesis of TiO2 nanotubes by anodic process. The effects of different electrolyte concentrations on the morphological, structural and vibrational properties of TiO2 nanotubes were studied. Scanning electron microscopy images showed that nanotube inner diameter ranging from 15 to 115nm could be obtained. At lower concentration, nanotubes were homogenous, and highly ordered. As concentration increased, nanotubes experienced dissolution process, and led to formation of pore-like structure. X-ray diffraction measurements revealed that anatase phase and Ti were present in the samples upon annealing at 500 degree C for one hour. The intensity of Raman Eg(1) peak was electrolyte concentration dependent. Full width half maximum value derived from Eg(1) peak was associated with the intensity which was related to the change of TiO2 nanotubes morphological quality.
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ISSN:0040-6090
1879-2731
DOI:10.1016/j.tsf.2011.07.071