BaTaO₂N nitrided from a precursor oxide having a perovskite-type structure and a Ba/Ta ratio of unity, nominally expressed as (Na_1/4Ba_3/4)(Zn_1/4Ta_3/4)O₃, shows an apparent quantum yield of 11.9% at 420 nm during the photocatalytic oxygen evolution reaction. This is more than five times greater than those reported for existing BaTaO₂N photocatalysts.

Effect of Ar annealing on the surface properties of BaNbO₂N particles and photoelectrochemical water oxidation activity.

A series of LaMg_xNb_1−xO_1+3xN_2−3x solid solutions (0.0 ≤ x ≤ 0.5) was synthesized in an attempt to modify the band structures and improve the overall water splitting activity of these compounds.