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- W2991057995 abstract "Abstract In this work, Sb3Nb3O13 nanoparticles were synthesized via in situ co-precipitation and a subsequent heating route. The composition deviation of Nb and Sb from stoichiometric requirements of Sb3Nb3O13 resulted in the final products of Sb3Nb3O13/Nb2O5 and Sb3Nb3O13/Sb2O3 heterojunctions, respectively. XRD measurements and Rietveld refinements were applied to study phase formation and structure characteristics. The substrate Sb3Nb3O13 has band energy of 2.66 eV characterized by the indirect transition natures. The conduction-band is mainly constructed by Nb(6d) and the valence-band is O-2p orbitals. The photo-degradation activity of Sb3Nb3O13 on RhB dye solutions was conducted, which was significantly improved with the coupling with Sb2O3 and Nb2O5. Especially, Sb3Nb3O13/Nb2O5 heterojunction showed optimal photocatalytic abilities, which has a degradation rate more than 4 times higher than pure substrate Sb3Nb3O13. The photocatalytic mechanism was investigated via emission spectra and lifetimes of photo-created charges. In the heterojunction construction, light-created charge-carriers were efficiently separated resulting in high photocatalytic effects." @default.
- W2991057995 created "2019-12-05" @default.
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- W2991057995 date "2020-04-01" @default.
- W2991057995 modified "2023-09-26" @default.
- W2991057995 title "Preparation and photochemical properties of Sb3Nb3O13 nanoparticles and the derived semiconductor heterojunctions" @default.
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- W2991057995 doi "https://doi.org/10.1016/j.jlumin.2019.116924" @default.
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