Highly efficient decomposition of pure water into H2 and O2 over NaTaO3 photocatalysts

Hideki Kato, Akihiko Kudo

Research output: Contribution to journalArticlepeer-review

175 Citations (Scopus)


NaTaO3 with 4.0 eV band gap showed a high activity for the decomposition of pure water into H2 and O2 without co-catalysts when it was prepared in the presence of excess Na in order to prevent the formation of defects by the volatilization of Na. When NiO was supported on the NaTaO3 powder, the activity was drastically increased. The quantum yield of the NiO(0.05 wt%)/NaTaO3 photocatalyst was 28% for the water splitting at 270 nm.

Original languageEnglish
Pages (from-to)153-155
Number of pages3
JournalCatalysis Letters
Issue number2-3
Publication statusPublished - 1999 Apr
Externally publishedYes


  • NaTaO
  • Photocatalyst
  • Tantalate
  • Water splitting

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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