BiVO4 Photoanodes Modified with Synergetic Effects between Heterojunction Functionalized FeCoOx and Plasma Au Nanoparticles

The design and development of high-performance photoanodes are the key to efficient photoelectrochemical (PEC) water splitting. Based on carrier transfer characteristics localized surface plasmon resonance effect noble metals, gold nanoparticles (AuNPs) have been used improve performance photoanodes. In this study, a novel composite BiVO4/Au/FeCoOx photoanode is constructed, quantitative analysis its systematically conducted. results reveal that co-modification AuNPs FeCoOx plays synergetic role in enhancing absorption ultraviolet visible light BiVO4, which mainly attributed induced by extended edge position BiVO4/FeCoOx heterojunction. exhibits high photocurrent density 4.11 mA cm−2 at 1.23 V versus RHE room temperature under AM 1.5 G illumination, corresponds 299% increase compared pristine BiVO4 photoanode. These provide practical support for preparation PEC decorated with FeCoOx.