Tunable, light-assisted co-generation of CO and H2 from CO2 and H2O by Re(bipy-tbu)(CO)3Cl and p-Si in non-aqueous medium

Bhupendra Kumar; Jonathan M Smieja; Alissa F Sasayama; Clifford P Kubiak

doi:10.1039/c1cc16024a

Tunable, light-assisted co-generation of CO and H2 from CO2 and H2O by Re(bipy-tbu)(CO)3Cl and p-Si in non-aqueous medium

Chem Commun (Camb). 2012 Jan 7;48(2):272-4. doi: 10.1039/c1cc16024a. Epub 2011 Nov 16.

Authors

Bhupendra Kumar¹, Jonathan M Smieja, Alissa F Sasayama, Clifford P Kubiak

Affiliation

¹ Materials Science and Engineering Program, University of California San Diego, 9500 Gilman Drive MC 0418, La Jolla, California 92093, USA.

PMID: 22089513
DOI: 10.1039/c1cc16024a

Abstract

The light-assisted co-generation of carbon monoxide and hydrogen from carbon dioxide and water is reported. The combination of a homogeneous CO-evolving electrocatalyst and a heterogeneous H(2)-evolving photoelectrode surface provides for tunability of the H(2)/CO ratio. A total Faradaic efficiency of 102 ± 5% and a H(2)/CO ratio of 2:1 were achieved at a low homogeneous catalyst concentration (0.5 mM) in acetonitrile/water mixtures.