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- W2786968523 abstract "(00l)-facet-exposed planelike ABi2Nb2O9 (A = Ca, Sr, Ba) powders with a single-crystal grain were obtained successfully by the molten salt method. The planelike grains were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, diffuse reflectance spectroscopy, photoluminescence spectroscopy, and X-ray photoelectron spectroscopy. With modification by platinum nanoparticles as a cocatalyst, these materials were tested as photocatalysts for water splitting under full arc light irradiation. The H2 evolution activities of the planelike ABi2Nb2O9 (A = Ca, Sr, Ba) prepared by the molten salt method were almost an order of magnitude higher than those of the ABi2Nb2O9 (A = Ca, Sr, Ba) prepared by traditional solid-state method. The planelike ABi2Nb2O9 (A = Ca, Sr, Ba) powders also have higher O2 evolution activities than the ABi2Nb2O9 (A = Ca, Sr, Ba) powders prepared by the traditional solid-state method. The oxidation and reduction catalytic sites on the planelike ABi2Nb2O9 (A = Ca, Sr, Ba) are discussed in detail. With increasing temperature of the molten salt, the variation tendencies of the photocatalytic activities of CaBi2Nb2O9, SrBi2Nb2O9, and BaBi2Nb2O9 for water splitting were different from each other due to the different growth rhythm of the planelike ABi2Nb2O9 (A = Ca, Sr, Ba) grains. The CaBi2Nb2O9 and SrBi2Nb2O9 with an orthorhombic lattice had a higher photocatalytic activity than BaBi2Nb2O9 with a tetragonal lattice because of the strong distortion of NbO6 octahedra in the perovskite-like slabs of CaBi2Nb2O9 and SrBi2Nb2O9." @default.
- W2786968523 created "2018-02-23" @default.
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- W2786968523 date "2018-02-08" @default.
- W2786968523 modified "2023-10-16" @default.
- W2786968523 title "(00<i>l</i>)-Facet-Exposed Planelike ABi<sub>2</sub>Nb<sub>2</sub>O<sub>9</sub> (A = Ca, Sr, Ba) Powders with a Single-Crystal Grain for Enhancement of Photocatalytic Activity" @default.
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- W2786968523 doi "https://doi.org/10.1021/acssuschemeng.7b04181" @default.
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