Photoelectrochemical water oxidation of LaTaON2 under visible-light irradiation

LaTaON2 photoanodes, which are fabricated by using LaTaON2 powders, are found to exhibit photoelectrochemical activity for overall water splitting. The photocurrent density for LaTaON2 photoelectrodes was ca. 120 μA cm−2 at 1.5 V vs. reversible hydrogen electrode (RHE) in 1 M NaOH aqueous solutions (pH = 13.6) under AM 1.5 G simulated sunlight irradiation (100 mW cm−2).