Platinum group metals and their oxides in semiconductor photosensitisation

A. Mills, S.K. Lee

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)


The basic principles of semiconductor photochemistry, particularly using titania as a semiconductor photocatalyst, are discussed. When a platinum group metal or its oxide is deposited onto the surface of a sensitised semiconductor the overall efficiency of the reactions it takes part in are often improved, especially when the deposits are used as hydrogen and oxygen catalysts, respectively. Methods of depositing metal or metal oxide are examined, and a particular focus is given to a photodeposition process that uses a sacrificial electron donor. Platinum group metal and platinum group metal oxide coated semiconductor photocatalysts are prominent in heterogeneous systems that are capable of the photoreduction, oxidation and cleavage of water. There is a recent renaissance in work on water-splitting semiconductor-sensitised photosystems, but there are continued concerns over their irreproducibility, longevity and photosynthetic nature.
Original languageEnglish
Pages (from-to)2-12
Number of pages10
JournalPlatinum Metals Review
Issue number1
Publication statusPublished - 1 Jan 2003


  • semiconductor photochemistry
  • platinum group metal
  • platinum group metal oxide


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