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- W2783241913 abstract "Photoelectrochemical (PEC) water reduction is a long-term strategical technology for hydrogen production. In this work, we synthesize a series of compact and nano/mesoporous Nb-substituted BaBiO3 [i.e., Ba2Bi(Bi1–xNbx)O6, 0 ≤ x ≤ 0.93, BBNO] thin films using cost-effective chemical solution methods. The synthesized BBNO alloy based thin films demonstrate tunable bandgaps from 1.41 eV (x = 0) to 1.89 eV (x = 0.93) to efficiently absorb the solar spectrum and p-type conductivities suitable for hydrogen production. The photoelectrodes with a configuration fluorine-doped SnO2/BBNO (0 ≤ x ≤ 0.93)/Pt produce cathodic photocurrents of 0.05–1 mA·cm–2 at 0 VRHE (volt versus reversible hydrogen electrode) measured in a neutral (pH = 7.2) phosphate buffer and under simulated AM 1.5G illumination (100 mW·cm–2). The BaBiO3 without Nb alloying based electrode delivers the best photocurrent of 1 mA·cm–2 at 0 VRHE but is subjected to severe corrosions during the PEC related tests. Alloying Nb has an obvious influence on enhancing the material stability against corrosion. With Nb alloying, the screen-printed nanoporous BBNO (x = 0.6, bandgap = 1.62 eV) based photoelectrode generates a better photocurrent of 0.2 mA·cm–2 at 0 VRHE with a highly positive onset at 1.5 VRHE enabling unbiased water reduction." @default.
- W2783241913 created "2018-01-26" @default.
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- W2783241913 date "2018-01-24" @default.
- W2783241913 modified "2023-10-14" @default.
- W2783241913 title "Solution-Processed Nb-Substituted BaBiO<sub>3</sub> Double Perovskite Thin Films for Photoelectrochemical Water Reduction" @default.
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- W2783241913 doi "https://doi.org/10.1021/acs.chemmater.7b04880" @default.
- W2783241913 hasPublicationYear "2018" @default.
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