Excited state dynamics of Ru10 cluster interfacing anatase TiO2(101) Surface and liquid water

Shuping Huang, Talgat M. Inerbaev, Dmitri S. Kilin

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Charge transfer dynamics at the interface of supported metal nanocluster and liquid water by GGA+U calculations combined with density matrix formalism is considered. The Ru10 cluster introduces new states into the band gap of TiO2 surface, narrows the band gap of TiO2, and enhances the absorption strength. The H2O adsorption significantly enhances the intensity of photon absorption, which is due to the formation of Ti-O(water) and Ru-O(water) bonds at the interfaces. The Ru10 cluster promotes the dissociation of water, facilitates charge transfer, and increases the relaxation rates of holes and electrons. We expect that our results are helpful in understanding basic processes contributing to photoelectrochemical water splitting.

Original languageEnglish (US)
Pages (from-to)2823-2829
Number of pages7
JournalJournal of Physical Chemistry Letters
Volume5
Issue number16
DOIs
StatePublished - Aug 21 2014

Keywords

  • carrier dynamics
  • charge transfer
  • metal cluster
  • semiconductor surface
  • water

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