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- W2910335846 abstract "Abstract In this work, a facile hydrothermal method is proposed to fabricate Nb-doped WO3 nanotriangle thin films, and their band edge properties and photoelectrochemical water splitting activity were explored. The process of doping and thin film formation was simultaneously achieved in a single step hydrothermal condensation of peroxopolytungstic acid solution containing Nb precursor. The crystallographic study reveals that doping of Nb into WO3 lattice obstructs the reconstructive transformation of orthorhombic WO3·0.33H2O during annealing consequently producing hexagonal phase instead of the monoclinic phase. The insertion of Nb causes the increase in band gap and induces oxygen vacancies in WO3. Uniform distribution of Nb in WO3 was observed containing majorly Nb5+ valence and a small amount of Nb4+ state. PEC characterization showed the increase in photocurrent, (at AM 1.5G illumination) incident photon to current and photoconversion efficiency values of WO3 upon Nb doping. Band edge analysis revealed that both conduction and valence band edge of WO3 show downward shift towards higher potential vs. RHE whereas the Fermi level show upward shift as a result of Nb doping." @default.
- W2910335846 created "2019-01-25" @default.
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- W2910335846 date "2019-05-01" @default.
- W2910335846 modified "2023-09-24" @default.
- W2910335846 title "Niobium incorporated WO3 nanotriangles: Band edge insights and improved photoelectrochemical water splitting activity" @default.
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- W2910335846 doi "https://doi.org/10.1016/j.ceramint.2019.01.117" @default.
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