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Issue 65, 2015
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High aspect ratio TiO2 nanowires tailored in concentrated HCl hydrothermal condition for photoelectrochemical water splitting

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Abstract

TiO2 nanowire/nanorod arrays grown on FTO substrate by hydrothermal reaction have attracted great attention because of favorable applications in dye-sensitized solar cells and quantum dot solar cells. In this paper, discrete vertically aligned TiO2 nanowire arrays as long as 7.2 μm and diameter of less than 100 nm were successfully synthesized on FTO substrate via the hydrothermal method. The influence of hydrothermal precursor composition on morphologies of the grown wires was investigated. Photoelectrochemical water-splitting performance for nanowires with different lengths was studied; the best performance was observed for the longest array without a compact layer. The growth mechanism in concentrated HCl was also examined. The TiO2 nanowire array developed in this paper provides an optimal structure for energy-harvesting applications requiring long and discrete nanowires as electron collectors.

Graphical abstract: High aspect ratio TiO2 nanowires tailored in concentrated HCl hydrothermal condition for photoelectrochemical water splitting

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Publication details

The article was received on 07 Apr 2015, accepted on 02 Jun 2015 and first published on 03 Jun 2015


Article type: Paper
DOI: 10.1039/C5RA06149K
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Citation: RSC Adv., 2015,5, 53012-53018
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    High aspect ratio TiO2 nanowires tailored in concentrated HCl hydrothermal condition for photoelectrochemical water splitting

    J. Su and L. Guo, RSC Adv., 2015, 5, 53012
    DOI: 10.1039/C5RA06149K

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