Photochemical reduction of nitrate to ammonia using layered hydrous titanate/cadmium sulphide nanocomposites

Tsugio Sato, Ken Ichi Sato, Yoshinobu Fujishiro, Toshiaki Yoshioka, Akitsugu Okuwaki

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


The photocatalytic activity of H2Ti4O9/CdS nanocomposites incorporating CdS particles, less than 0.8 nm thick, in the interlayer of H2Ti4O9 was evaluated for the reduction of NO3- with and without methanol. NO3- was photochemically reduced by bandgap illumination in the presence of H2Ti4O9/CdS nanocomposites with and without methanol although unsupported CdS showed no noticeable photocatalytic activity for NO3- reduction. The oxidation of CdS in H2Ti4O9/CdS to SO42- was accompanied by NO3- reduction without methanol, whereas addition of methanol was useful to promote the NO3- reduction and depress the oxidation of CdS. The catalytic activity of H2Ti4O9/CdS greatly increased with doping Pt particles in the interlayer.

Original languageEnglish
Pages (from-to)345-349
Number of pages5
JournalJournal of Chemical Technology and Biotechnology
Issue number4
Publication statusPublished - 1996 Dec


  • Cadmium sulphide
  • Intercalation
  • Layered hydrous titanate
  • Nanocomposites
  • Nitrate reduction
  • Photocatalyst

ASJC Scopus subject areas

  • Biotechnology
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Waste Management and Disposal
  • Pollution
  • Organic Chemistry
  • Inorganic Chemistry


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