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- W4386871395 abstract "Herein, we demonstrate a facile surface treatment of a nanostructured tungsten oxide (WO3) film by Fe2+ ions as a novel post-fabrication technique for enhanced photo-electrochemical water oxidation under sunlight. The structural, optical, morphological and elemental characterizations of the n-type WO3 nanoplates based electrodes have been done using X-ray diffraction, UV–visible diffuse reflectance spectroscopy, fluorescence spectroscopy, field emission scanning electron microscopy, energy dispersive X-ray analysis and X-ray photoelectron spectroscopy, respectively. The modified WO3 photoanodes have been subsequently examined for photo-electrochemical response by linear sweep voltammetry, photo-amperometry, electrochemical impedance spectroscopy (Nyquist plot) and Mott-Schottky analysis under AM 1.5 G solar simulated light. The optimized WO3 film with Fe:W ratio of ∼1:25, (Fe2+:Fe3+ ratio of ∼3:2) at the surface exhibited up to 3 times higher and more stable photocurrent under back illumination than that for untreated WO3 indicating the success of the surface treatment. Investigations revealed that the improved performance is a consequence of an improved charge transfer process at the interface resulting in lowering of unwanted recombination." @default.
- W4386871395 created "2023-09-20" @default.
- W4386871395 creator A5055512869 @default.
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- W4386871395 date "2023-10-01" @default.
- W4386871395 modified "2023-09-27" @default.
- W4386871395 title "Enhanced photoelectrochemical water oxidation by Fe(II) modified nanostructured WO3 photoanode" @default.
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- W4386871395 doi "https://doi.org/10.1016/j.optmat.2023.114361" @default.
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