Nanostructured TiO2 photocatalyst and pump-probe spectroscopic study

Wen can Zhou, Zheng cao Li, Zheng jun Zhang, Ken Onda, Sho Ogihara, Yoichi Okimoto, Shin ya Koshihara

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Titanium dioxide (TiO2), with its large band gap, has attracted much attention due to its excellent photocatalytic activity. TiO2 ball-shaped nano-particles were deposited on silicon substrates by a thermal oxidation approach. With an increase in the annealing temperature the surface morphology and the structure of TiO2 remained stable, exhibiting good heat stability; meanwhile, the hydrogen production rate also increased. The femtosecond pump-probe spectroscopic study showed that the lifetime of carriers of the samples as- deposited and post-annealed at different temperatures were longer than 20 ps.

Original languageEnglish
Pages (from-to)403-408
Number of pages6
JournalFrontiers of Materials Science in China
Issue number4
Publication statusPublished - Nov 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)


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