Lattice Defects Engineering in W-, Zr-doped BiVO₄ by Flame Spray Pyrolysis: Enhancing Photocatalytic O₂ Evolution.

ABSTRACT: A flame spray pyrolysis (FSP) method has been developed, for controlled doping of BiVO₄ nanoparticles with W and Zr in tandem with the oxygen vacancies (Vo) of the BiVO₄ lattice. Based on XPS and Raman data, we show that the nanolattice of W-BiVO₄ and Zr-BiO₄ can be controlled to achieve optimal O₂ evolution from H₂O photocatalysis. A synergistic effect is found between the W- and Zr-doping level in correlation with the Vo-concentration. FSP- made W-BiVO₄ show optimal photocatalytic O₂-production from H₂O, up to 1020 μmol/(g × h) for 5%W-BiVO₄, while the best performing Zr-doped achieved 970 μmol/(g × h) for 5%Zr-BiVO₄. Higher W-or Zr-doping resulted in deteriorat

SUBMITTER: Stathi P 

PROVIDER: S-EPMC7920441 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature