Interlayer bismuthene as a charge-transporter improves the photoelectrochemical water oxidation activity of a bismuth vanadate metal–organic framework

Abstract

The introduction of bismuthene as a charge transport layer between BiVO₄ and a cocatalyst (Ni-metal–organic framework, Ni-MOF) improves the photoelectrochemical water oxidation activity. The photoanode BiVO₄/Bi/Ni-MOF produces a photocurrent of 4.71 (±0.2) mA cm⁻² (at 1.23 V vs. RHE), which is 2.5 and 1.25 times higher than those of bare BiVO₄ and BiVO₄/Ni-MOF, respectively.