Facile Fabrication of a Highly Crystalline and Well-Interconnected Hematite Nanoparticle Photoanode for Efficient Visible-Light-Driven Water Oxidation.

Facile and scalable fabrication of α-FeO photoanodes using a precursor solution containing Fe ions and 1-ethylimidazole (EIm) in methanol was demonstrated to afford a rigidly adhered α-FeO film with a controllable thickness on a fluorine-doped tin oxide (FTO) substrate. EIm ligation to Fe ions in the precursor solution brought about high crystallinity of three-dimensionally well-interconnected nanoparticles of α-FeO upon sintering. This is responsible for the 13.