The Bi 2O 3 quantum dots decorated nitrogen doped Bi 3NbO 7 nanosheets (Bi 2O 3/N-Bi 3NbO 7) were successfully synthesized via a facile in situ hydrothermal process as a straightforward protocol. The peony-like N-Bi 3NbO 7 hierarchical architectures decorated with surface enrichment of Bi 2O 3 quantum dots were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectra, UV-vis diffuse reflectance spectrum and photoluminescence spectra. The as-prepared Bi 2O 3/N- Bi 3NbO 7 heterostructures exhibited higher photocatalytic activities in the decomposition of model pollutants under visible-light irradiation than N-Bi 3NbO 7 nanosheets in the absence of any expensive metal components and co-catalysts, which could be attributed to the enhanced light absorbance multiple reflections in the heterostructures, the enhanced photosensitizing effect of the surface enriched Bi 2O 3 quantum dots and the strong interaction between Bi 2O 3 and N-Bi 3NbO 7. Furthermore, the Bi 2O 3/N-Bi 3NbO 7 heterostructures exhibited strong durability that may be ascribed to the high hydrothermal stability of the flower-like structure and the inhibition of Bi 2O 3 leaching owing to its tight chemical bonding with N-Bi 3NbO 7 nanosheets.
ASJC Scopus subject areas
- 化学 (全般)