Fe impurities in photoelectrocatalysis

It has been a great pleasure to be associated to this fundamental work by Loget and Pattanasattayavong, just published in J. Am. Chem. Soc. The iron content in NiOOH changes it’s redox potential less than the workfunction. This is due to a combined effect: Fe-surface content is higher than in the bulk and it changes the hydrogenation surface state, leading to more oxidized  surfaces compared to the pure Ni surface.