Apparent two-dimensional behavior of TiO2 nanotubes revealed by light absorption and luminescence

Dmitry V. Bavykin, Sergey N. Gordeev, Andriy V. Moskalenko, Alexei A. Lapkin, Frank C. Walsh

Research output: Contribution to journalArticle

117 Citations (Scopus)

Abstract

Optical absorption and photoluminescence (PL) properties of colloidal TiO2 nanotubes, produced by the alkali hydrothermal method, were studied at room temp. in the range 300-700 nm. Nanotubes having an internal diam. in the range 2.5-5 nm have very similar optical properties, in contrast to the expected behavior for quasi-1-D systems. This is explained by the complete thermal smearing of all 1-D effects, due to the large effective mass of charge carriers in TiO2, resulting in an apparent 2-D behavior of TiO2 nanotubes. [on SciFinder (R)]
Original languageEnglish
Pages (from-to)8565-8569
Number of pages5
JournalJournal of Physical Chemistry B
Volume109
Issue number18
DOIs
Publication statusPublished - 2005

Keywords

  • Luminescence (diam.-dependent
  • Nanotubes
  • Photoexcitation (luminescence excitation
  • titanium oxide nanotube absorption photoluminescence diam size effect
  • Band structure
  • Quantum size effect (nanotube diam.
  • of TiO2 nanotubes)
  • Optical absorption (apparent two-dimensional behavior of TiO2 nanotubes revealed by light absorption and luminescence)
  • UV and visible spectra (absorption
  • Surface structure (of TiO2 nanotubes)
  • apparent two-dimensional behavior of TiO2 nanotubes revealed by light absorption and luminescence)

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  • Cite this

    Bavykin, D. V., Gordeev, S. N., Moskalenko, A. V., Lapkin, A. A., & Walsh, F. C. (2005). Apparent two-dimensional behavior of TiO2 nanotubes revealed by light absorption and luminescence. Journal of Physical Chemistry B, 109(18), 8565-8569. https://doi.org/10.1021/jp050762m