A noble-metal-free hydrogen evolution catalyst grafted to visible light-absorbing semiconductors

Gary Moore, Ian D. Sharp

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

We report a method for facile connection of a nickel bisdiphosphine-based functional mimic of the active site of hydrogenase to photocathodes that are relevant to artificial photosynthesis. This procedure exploits the UV-induced immobilization chemistry of alkenes to gallium phosphide and silicon surfaces. The photochemical grafting provides a means for patterning molecular linkers with attachment points to catalysts. Successful grafting is characterized by grazing angle attenuated total reflection Fourier transform infrared spectroscopy (GATR-FTIR), which shows catalyst vibrational modes, as well as X-ray photoelectron spectroscopy (XPS), which confirms the presence of intact Ni complex on the surface. The modular nature of this approach allows independent modification of the light absorber, bridging material, anchoring functionality, or catalyst as new materials and discoveries emerge.

Original languageEnglish (US)
Pages (from-to)568-572
Number of pages5
JournalJournal of Physical Chemistry Letters
Volume4
Issue number4
DOIs
StatePublished - Feb 21 2013
Externally publishedYes

Fingerprint

Precious metals
noble metals
Hydrogen
Semiconductor materials
catalysts
Catalysts
hydrogen
Gallium phosphide
gallium phosphides
Hydrogenase
Photocathodes
photosynthesis
Photosynthesis
photocathodes
Alkenes
grazing
Silicon
Nickel
immobilization
alkenes

Keywords

  • artificial photosynthesis
  • interfaces
  • semiconductor
  • solar fuels
  • surface

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

A noble-metal-free hydrogen evolution catalyst grafted to visible light-absorbing semiconductors. / Moore, Gary; Sharp, Ian D.

In: Journal of Physical Chemistry Letters, Vol. 4, No. 4, 21.02.2013, p. 568-572.

Research output: Contribution to journalArticle

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