Abstract
Well crystallized niobium-doped TiO 2 nanotube arrays (TiNbO-NT) were successfully synthesized via the anodization of titanium/niobium alloy sheets, followed with a heat treatment at 550 °C for 2 h. Morphology analysis results demonstrated that both the titanium/niobium alloy microstructure and the dissolution strength of electrolyte played major roles in the formation of nanotube structure. A single-phase microstructure was more favorable to the formation of uniform nanotube arrays, while modulating the dissolution strength of electrolyte was required to obtain nanotube arrays from the alloys with multi-phase microstructures. X-ray diffraction (XRD) and X-ray photoelectron (XPS) analysis results clearly demonstrated that niobium dopants (Nb 5+) were successfully doped into TiO 2 anatase lattice by substituting Ti 4+ in this approach.
Original language | English (US) |
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Pages (from-to) | 865-870 |
Number of pages | 6 |
Journal | Journal of Materials Science and Technology |
Volume | 28 |
Issue number | 10 |
DOIs | |
State | Published - Oct 2012 |
Externally published | Yes |
Keywords
- Anodization
- Doping
- Nanotube arrays
- TiO
ASJC Scopus subject areas
- Ceramics and Composites
- Mechanics of Materials
- Mechanical Engineering
- Polymers and Plastics
- Metals and Alloys
- Materials Chemistry