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- W2321317730 abstract "The TiO2 nanotube system exhibits properties of interest in photoelectrochemical water splitting for hydrogen production, including high surface area and vectorial charge transport along the nanotube length. Changes in the anodizing electrolyte chemistry provide the means to control nanotube morphology as well as their length and width. Despite the large amount of work available on nanotube synthesis, however, a thorough assessment of the effect of anodization conditions on the photoelectrochemical performance is still unavailable. In this paper, we characterize TiO2 nanotubes produced by varying the water content of the organic anodization electrolyte and investigate the influence of the electrolyte on their photoelectrochemical performance. We find that the photocurrent efficiency of the nanotubes is optimized by using an 11 vol % water:ethylene glycol ratio. We also demonstrate that a double-anodization technique produces a cleaner surface, resulting in higher photon-to-current conversion efficiencies of up to 30% at 350 nm. Raman spectroscopy, X-ray diffraction, and electrochemical impedance studies support the notion that the variation in crystallinity as a function of water content is the main factor in determining the photocurrent efficiency of the nanotube system." @default.
- W2321317730 created "2016-06-24" @default.
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- W2321317730 date "2013-04-02" @default.
- W2321317730 modified "2023-09-30" @default.
- W2321317730 title "Photocurrent Conversion in Anodized TiO<sub>2</sub> Nanotube Arrays: Effect of the Water Content in Anodizing Solutions" @default.
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- W2321317730 doi "https://doi.org/10.1021/jp400318n" @default.
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