Synthesis and Characterization of Niobium-doped TiO 2 Nanotube Arrays by Anodization of Ti-20Nb Alloys

Zhengchao Xu, Qi Li, Shian Gao, Jianku Shang

Research output: Contribution to journalArticle

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 languageEnglish (US)
Pages (from-to)865-870
Number of pages6
JournalJournal of Materials Science and Technology
Volume28
Issue number10
DOIs
StatePublished - Oct 1 2012

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

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