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Issue 11, 2015
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Quasi-1D hyperbranched WO3 nanostructures for low-voltage photoelectrochemical water splitting

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Abstract

Arrays of hyperbranched high aspect ratio mesostructures are grown by pulsed laser deposition through a self-assembly process from the gas phase. These hierarchical arrays are successfully used as photoanodes for the photoelectrochemical splitting of water, exhibiting an onset potential as low as 0.4 V vs. RHE and saturation current densities up to 1.85 mA cm−2 at 0.8 V vs. RHE. While the latter is similar to the state of the art values for WO3 nanostructured photoanodes, both the onset and saturation voltages are significantly lower than any other reported values. This peculiar behavior is attributed to the hyperbranched structure and to its excellent optical and electronic properties.

Graphical abstract: Quasi-1D hyperbranched WO3 nanostructures for low-voltage photoelectrochemical water splitting

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Publication details

The article was received on 10 Dec 2014, accepted on 26 Jan 2015 and first published on 02 Feb 2015


Article type: Paper
DOI: 10.1039/C4TA06786J
Author version available: Download Author version (PDF)
Citation: J. Mater. Chem. A, 2015,3, 6110-6117
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    Quasi-1D hyperbranched WO3 nanostructures for low-voltage photoelectrochemical water splitting

    M. Balandeh, A. Mezzetti, A. Tacca, S. Leonardi, G. Marra, G. Divitini, C. Ducati, L. Meda and F. Di Fonzo, J. Mater. Chem. A, 2015, 3, 6110
    DOI: 10.1039/C4TA06786J

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