26 February 2016 - Researchers from the Inorganic Membranes group, PhotoCatalytic Synthesis group and Leiden University, have recently evaluated the application of copper porous hollow fibers in electro-catalytic reduction of CO2 to CO. The results of the research are now published in Nature Communications:
http://www.nature.com/ncomms/2016/160218/ncomms10748/full/ncomms10748.html
The quintessence of this paper is that the porous copper fibers allow very efficient mass transport of CO2, protons, and CO to a large triple phase boundary where reactants and electrons meet. The result is a very high and spectacular efficiency: ~80-85% of the electrons is used for reduction of CO2, around 75% of which result in CO formation, at exceptionally low over-potential.