Synergistic Effect of AuPd and NiOOH Cocatalysts Promoting Photoctalytic H2O2 Production of BiVO4 Photocatalyst
Wenjing Qi , Haiyang Shi , Ping Wang , Feng Chen , Xuefei Wang , Huogen Yu
Journal of Wuhan University of Technology Materials Science Edition ›› 2025, Vol. 40 ›› Issue (2) : 344 -352.
Synergistic Effect of AuPd and NiOOH Cocatalysts Promoting Photoctalytic H2O2 Production of BiVO4 Photocatalyst
BiVO4 is an ideal photocatalysts for H2O2 generation due to its suitable band edge. In practice, however, the photocatalytic performance of BiVO4 is substantially low owing to the slow kinetics of 2e− O2 reduction (2e− ORR) and water oxidation (WOR) processes. To solve the problems, in this work, the AuPd alloy cocatalyst and the NiOOH cocatalys were modified on the electron (010) facets and the (110) hole facet of BiVO4 by photodeposition method. The designed AuPd/BiVO4/NiOOH(0.5%) photocatalyst showed prominent photocatalytic H2O2 production activity of 289.3 µmmol·L−1 with an AQE value of 0.89% at 420 nm, which was increased by 40 times compared with the BiVO4 sample (7.1 µmmolµL−1). The outstanding photocatalytic activity of the AuPd/BiVO4/NiOOH photocatalyst can be attributed to the synergistic effect of AuPd and NiOOH cocatalysts, which promoted the kinetics of oxygen reduction and water oxidation, and concurrently facilitated the charge separation. The present strategy of dual-cocatalyst rational assembly on different facets of BiVO4 provides an insight into explore efficient BiVO4-based materials for H2O2 production.
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Wuhan University of Technology and Springer-Verlag GmbH Germany, Part of Springer Nature
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