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Issue 1, 2017
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Metalloporphyrin-modified semiconductors for solar fuel production

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We report a direct one-step method to chemically graft metalloporphyrins to a visible-light-absorbing gallium phosphide semiconductor with the aim of constructing an integrated photocathode for light activating chemical transformations that include capturing, converting, and storing solar energy as fuels. Structural characterization of the hybrid assemblies is achieved using surface-sensitive spectroscopic methods, and functional performance for photoinduced hydrogen production is demonstrated via three-electrode electrochemical testing combined with photoproduct analysis using gas chromatography. Measurements of the total per geometric area porphyrin surface loadings using a cobalt-porphyrin based assembly indicate a turnover frequency ≥3.9 H2 molecules per site per second, representing the highest reported to date for a molecular-catalyst-modified semiconductor photoelectrode operating at the H+/H2 equilibrium potential under 1-sun illumination.

Graphical abstract: Metalloporphyrin-modified semiconductors for solar fuel production

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The article was received on 17 Jun 2016, accepted on 05 Aug 2016 and first published on 05 Aug 2016

Article type: Edge Article
DOI: 10.1039/C6SC02664H
Citation: Chem. Sci., 2017,8, 253-259
  • Open access: Creative Commons BY-NC license
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    Metalloporphyrin-modified semiconductors for solar fuel production

    D. Khusnutdinova, A. M. Beiler, B. L. Wadsworth, S. I. Jacob and G. F. Moore, Chem. Sci., 2017, 8, 253
    DOI: 10.1039/C6SC02664H

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