Charge separation at the rutile/anatase interface: A dominant factor of photocatalytic activity

Takahira Miyagi, Masayuki Kamei, Takefumi Mitsuhashi, Takamasa Ishigaki, Atsushi Yamazaki

Research output: Contribution to journalArticle

119 Citations (Scopus)

Abstract

Epitaxial and polycrystalline anatase films were grown by pulse-powered magnetron sputtering. The photoreduction of Ag ions showed the difference in the distribution of the photocatalytic active sites in these films. The polycrystalline anatase film was covered with an Ag layer. In contrast, discrete Ag particles were interspatially deposited on the epitaxial anatase film. Evaluation of the epitaxial film by micro-Raman spectrometry revealed that the rutile coexisted at only the site where the Ag particle was precipitated. These results suggest that the rutile/anatase interface is the active site for photocatalysis and is one of the dominant factors of the photocatalytic activity.

Original languageEnglish
Pages (from-to)399-402
Number of pages4
JournalChemical Physics Letters
Volume390
Issue number4-6
DOIs
Publication statusPublished - 2004 Jun 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Charge separation at the rutile/anatase interface: A dominant factor of photocatalytic activity'. Together they form a unique fingerprint.

  • Cite this