Enhanced Photocatalytic Activity of Nonuniformly Nitrogen-Doped Nb₂O₅ by Prolonging the Lifetime of Photogenerated Holes.

ABSTRACT: The narrow band gap and significant separation of photogenerated carriers are essential aspects in practical photocatalytic applications. Nitrogen doping usually narrows the band gap of semiconductor oxides, and it enhances photocatalytic activity. Nitrogen-doped Nb₂O₅ was prepared by a multiple hydrothermal method. The non-metal element N inside the nanostructure, working as the trapping sites for the holes, which were effectively incorporated into the crystal lattice of Nb₂O₅ semiconductor oxide, remarkably shorten the band gap (3.1 eV) to enhance the visible light response, effectively reducing the photoinduced electron-hole pair recombination and prolonging carrier lifetime. The multilayer coating structure with a gradient concentration distr

SUBMITTER: Guo W 

PROVIDER: S-EPMC9147847 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature