Comparison of the substrate dependent performance of Pt-, Au- and Ag-doped TiO2 photocatalysts in H2-production and in decomposition of various organics

Károly Mogyorósi, Ákos Kmetykó, Nóra Czirbus, Gábor Veréb, Pál Sipos, András Dombi

Research output: Article

47 Citations (Scopus)

Abstract

Pt-, Au- and Ag-deposited Degussa P25 photocatalysts [at 1% (m/m) noble metal loading] were prepared in which the noble metals are most likely to be very finely dispersed on the surface of the TiO2 nanocrystals. Deposition of noble metals increased the photocatalytic efficiency (relative to the bare photocatalyst) in the decomposition of oxalic- and formic acid, while decreased it in phenol containing systems. In H2-production, a very high quantum yield has been found for the Pt-TiO2 photocatalyst in the presence of oxalic and formic acids as sacrificial reagents, which opens the possibility for the economic use of industrial side products (e.g., oxalic- and formic acid) for photocatalytic H2-production.

Original languageEnglish
Pages (from-to)215-225
Number of pages11
JournalReaction Kinetics and Catalysis Letters
Volume98
Issue number2
DOIs
Publication statusPublished - jan. 1 2009

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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