Photodegradation of binbo 4 powder during photocatalytic reactions

Scott S. Dunkle, Kenneth S. Suslick

Research output: Contribution to journalArticlepeer-review


BiNbO 4 powders prepared by solid state reaction were tested for photocatalytic activity in methanol solutions under UV irradiation. When the material is tested without the presence of a Pt cocatalyst, photocatalytic activity for H 2 evolution is superior to that of TiO 2. It was also found that BiNbO 4 photodegrades into metallic Bi and reduced Nb oxides after use; materials were characterized by SEM, XRD, and XPS. Adding Pt to the surface of the photocatalyst increases photocatalytic activity and importantly, helps to prevent photodegradation of the oxide material. With 1 wt % Pt loading, photodegradation is essentially absent.

Original languageEnglish (US)
Pages (from-to)10341-10345
Number of pages5
JournalJournal of Physical Chemistry C
Issue number24
StatePublished - Jun 18 2009

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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