Issue 1, 2017

Metalloporphyrin-modified semiconductors for solar fuel production

Abstract

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

Supplementary files

Article information

Article type
Edge Article
Submitted
17 Jun 2016
Accepted
05 Aug 2016
First published
05 Aug 2016
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2017,8, 253-259

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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