This study demonstrates a light-induced atomic reconfiguration process that transforms a NiFe alloy nano-film into a simultaneously efficient and stable photoanode, with an applied bias photonto-current efficiency of 4.24% and a long-lasting device lifetime beyond 250 hours with more than 88% retention of the initial current density under accelerated working conditions with a current density above 30 mA cm -2 . Such a light-accelerated NiFe oxyhydroxides-alloy nanomaterial offers a path to address the stability problem of photoanodes for water splitting. Figure Considering the various photocathodic reaction fields that the OER couples with, the NiFe oxyhydroxidesalloy engineered photoanodes implemented in this work can facilitate diversified PEC reactions of significant industrial interest beyond solar-to-hydrogen conversion, encompassing nitrogen fixation to produce ammonia , carbon dioxide reduction for the generation of (multi)carbon fuels , and oxygen reduction to yield hydrogen peroxide . Moreover, the ability for diverse reactions that NiFe transition metals catalyze efficiently also enables opportunities to replace the anodic OER with thermodynamically more favored reactions of industrial significance, such as biomass conversion to high-value chemicals for pharmaceutical and cosmetic industries, including ascorbic acid oxidation to dehydroascorbic acid , glucose oxidation to glucaric acid , and organic wastes degradation for the environmental sustainability from urea oxidation in sewage water treatment to hydrazine oxidation in industrial wastewater .