In situ photodeposition of copper nanoparticles on TiO2: Novel catalysts with facile light-induced redox cycling

Alastair J J Lennox, Petra Bartels, Marga Martina Pohl, Henrik Junge, Matthias Beller*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

25 Citations (Scopus)
241 Downloads (Pure)

Abstract

The in situ photodeposition method of copper(0) nanoparticles on TiO2 is found to produce photoactive heterogeneous catalysts suitable for redox reactions. Several variables in the method that affect catalyst structure and activity have been investigated for H2 generation as a model reaction. The counter-anion of the copper salt used plays a pivotal role in determining size, distribution and crystallinity of the nanoparticles, as well as leaching, recyclability and stabilisation. Redox cycling between Cu(0) and Cu(II) was found to be extremely facile, with oxidation occurring aerobically and re-reduction under anaerobic irradiation in water.

Original languageEnglish
Pages (from-to)177-183
Number of pages7
JournalJournal of Catalysis
Volume340
DOIs
Publication statusPublished - 1 Aug 2016

Keywords

  • Copper
  • Hydrogen
  • Nanoparticles
  • Photocatalysis
  • Photodeposition
  • Titania

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