Photoinduced charge separation in titania nanotubes

Takashi Tachikawa, Sachiko Tojo, Mamoru Fujitsuka, Toru Sekino, Tetsuro Majima

Research output: Contribution to journalArticlepeer-review

115 Citations (Scopus)

Abstract

The photocatalytic one-electron oxidation reaction of an aromatic compound during UV light irradiation of titania nanotubes and nanoparticles was investigated using time-resolved diffuse reflectance spectroscopy. Remarkably long-lived radical cations of the aromatic compound and trapped electrons were observed for the nanotubes when compared to those for nanoparticles. The influences of the morphology on the one-electron oxidation process of an aromatic compound adsorbed on the surface were discussed in terms of the charge recombination dynamics between the radical cation and electrons in TiO 2.

Original languageEnglish
Pages (from-to)14055-14059
Number of pages5
JournalJournal of Physical Chemistry B
Volume110
Issue number29
DOIs
Publication statusPublished - 2006 Jul 27

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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