Melamine-assisted to fabricate pure α-Fe 2 O 3 polyhedron with high-index facet exposed as an effective photoelectrode

摘要: Introducing high-index facet into crystals is a promising way to provide additional catalytically active sites for boosting intrinsic activity. This work presents simple one-pot annealing fabricate highly photoactive pristine polyhedral α-Fe2O3 single crystal, using melamine as solvent and coordination agent. The HR-TEM results realized that the as-prepared sample was enclosed by {116} facet, which always not presented in traditional hydrothermal method. photoelectrochemical (PEC) measurements have been carried out showed polyhedron samples exhibited significantly enhancement photocurrent density, nearly 28 times higher than of prepared without under same conditions. Our may guide future designs crystal exposed metal oxides suggest paths further improvements allow technological development use.