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- W4313197751 abstract "Mixed-metal oxides composed of Nb5+(d0) and Te4+(p-) cations generally exhibit excellent optoelectronic properties due to the stereoactive lone pair of electrons in the structure. In this work, a mixed-metal niobate tellurite Nb4TeO12 is prepared using solid state reaction method. The p-n junctions α-Bi2O3/Nb4TeO12 are prepared via soaking the as-prepared particles and post annealing treatments. Nb4TeO12 has indirect electronic transition characteristic with a band energy of 3.01 eV. The bottom of conduction band is − 0.55 eV and the top of valance band is + 2.46 eV. Surface deposits of α-Bi2O3 induce the recrystallization on the particle surface. The microstructure, electrical impedance, and photocurrent properties are analyzed. The p-n junction can significantly delay the recombination between photo-created h+/e− pairs. As a consequence, significant improvement of photocatalysis in p-n junction α-Bi2O3/Nb4TeO12 was realized. The rate constants of as-prepared Nb4TeO12 and p-n junction α-Bi2O3/Nb4TeO12 (30/100) are 4.21 × 10−3 min−3 and 1.82 × 10−2 min−1, respectively. The experimental results show that deposits of α-Bi2O3 on the surface is effective to improve the surface light absorption and photochemical properties of the Nb5+−Te4+ oxide semiconductors." @default.
- W4313197751 created "2023-01-06" @default.
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- W4313197751 date "2023-03-01" @default.
- W4313197751 modified "2023-09-24" @default.
- W4313197751 title "Improved photocatalytic performance of Nb4TeO12 particles by the surface depositing α-Bi2O3" @default.
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- W4313197751 doi "https://doi.org/10.1016/j.colsurfa.2022.130888" @default.
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