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

Gary F. Moore; Ian D. Sharp

doi:10.1021/jz400028z

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

Gary F. Moore, Ian D. Sharp

Research output: Contribution to journal › Article › peer-review

81 Scopus citations

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 language	English (US)
Pages (from-to)	568-572
Number of pages	5
Journal	Journal of Physical Chemistry Letters
Volume	4
Issue number	4
DOIs	https://doi.org/10.1021/jz400028z
State	Published - Feb 21 2013
Externally published	Yes

Keywords

artificial photosynthesis
interfaces
semiconductor
solar fuels
surface

ASJC Scopus subject areas

General Materials Science
Physical and Theoretical Chemistry

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10.1021/jz400028z

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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.",

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AB - 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.

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

Abstract

Keywords

ASJC Scopus subject areas

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