Photocatalytic hydrogen production with copper photosensitizer-titanium dioxide composites

Michael Karnahl, Esteban Mejía, Nils Rockstroh, Stefanie Tschierlei, Shu Ping Luo, Kathleen Grabow, Angela Kruth, Volker Brüser, Henrik Junge, Stefan Lochbrunner, Matthias Beller

Research output: Contribution to journalArticlepeer-review

55 Scopus citations

Abstract

A series of heteroleptic copper photosensitizers [(PP)Cu(NN(SO 3Na)2)]+ containing sulfonate anchor groups is described. In the presence of titanium dioxide they form composites, which are active photosensitizers in the light driven reduction of protons. Further stabilization of these systems is achieved by encapsulation within a plasma-polymerized allylamine (PPAAm) layer. The resulting PPAAm-CuPS-TiO 2-composites exhibit a strong absorption in the visible region of the light. Photocatalytic hydrogen production is performed by using only non-noble metals. In the presence of an iron reduction catalyst a maximum turnover number of 2452 is obtained.

Original languageEnglish
Pages (from-to)82-86
Number of pages5
JournalChemCatChem
Volume6
Issue number1
DOIs
StatePublished - Jan 2014
Externally publishedYes

Keywords

  • copper
  • hydrogen
  • photochemistry
  • titanium dioxide
  • water splitting

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