"Double-Use" Strategy for Improving the Photoelectrochemical Performance of BiVO₄ Photoanodes Using a Cobalt-Functionalized Polyoxotungstate.

ABSTRACT: Doping and surface-modification are well-established strategies for the performance enhancement of bismuth vanadate (BiVO₄) photoanodes in photoelectrochemical (PEC) water splitting devices. Herein, a "double-use" strategy for the development of high-performance BiVO₄ photoanodes for solar water splitting is reported, where a molecular cobalt-phosphotungstate (CoPOM = Na₁₀[Co₄(H₂O)₂(PW₉O₃₄)₂]) is used both as a bulk doping agent as well as a surface-deposited water oxidation cocatalyst. The use of CoPOM for bulk doping of BiVO₄ is shown to enhance the electrical conductivity and improve the charge separation efficiency, resulting in the enhancement of the maximum applied-bias photo

SUBMITTER: Feng F 

PROVIDER: S-EPMC11744501 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature