Size-selected subnanometer cluster catalysts on semiconductor nanocrystal films for atomic scale insight into photocatalysis

Maximilian J. Berr, Florian F. Schweinberger, Markus Döblinger, Kai E. Sanwald, Christian Wolff, Johannes Breimeier, Andrew S. Crampton, Claron J. Ridge, Martin Tschurl, Ulrich Heiz, Frank Jäckel, Jochen Feldmann

Research output: Contribution to journalArticlepeer-review

83 Scopus citations

Abstract

We introduce size-selected subnanometer cluster catalysts deposited on thin films of colloidal semiconductor nanocrystals as a novel platform to obtain atomic scale insight into photocatalytic generation of solar fuels. Using Pt-cluster-decorated CdS nanorod films for photocatalytic hydrogen generation as an example, we determine the minimum amount of catalyst necessary to obtain maximum quantum efficiency of hydrogen generation. Further, we provide evidence for tuning photocatalytic activities by precisely controlling the cluster catalyst size.

Original languageEnglish
Pages (from-to)5903-5906
Number of pages4
JournalNano Letters
Volume12
Issue number11
DOIs
StatePublished - 14 Nov 2012
Externally publishedYes

Keywords

  • cadmium sulfide
  • colloidal semiconductor nanocrystals
  • photocatalysis
  • renewable energy
  • size-selected clusters
  • solar hydrogen

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