Synergistic Effect of Co₃(HPO₄)₂(OH)₂ Cocatalyst and Al₂O₃ Passivation Layer on BiVO₄ Photoanode for Enhanced Photoelectrochemical Water Oxidation.

ABSTRACT: Bismuth vanadate (BVO) is regarded as an exceptional photoanode material for photoelectrochemical (PEC) water splitting, but it is restricted by the severe photocorrosion and slow water oxidation kinetics. Herein, a synergistic strategy combined with a Co₃(HPO₄)₂(OH)₂ (CoPH) cocatalyst and an Al₂O₃ (ALO) passivation layer was proposed for enhanced PEC performance. The CoPH/ALO/BVO photoanode exhibits an impressive photocurrent density of 4.9 mA cm^-2 at 1.23 V_RHE and an applied bias photon-to-current efficiency (ABPE) of 1.47% at 0.76 V_RHE. This outstanding PEC performance can be ascribed to the suppressed surface charge recombination, facilitated interfacial charge transfer, and accelerated w

SUBMITTER: Sun Z 

PROVIDER: S-EPMC10856029 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature