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Issue 5, 2013
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N-Doped lepidocrocite nanotubular arrays: hydrothermal formation from anodic TiO2 nanotubes and enhanced visible light photoresponse

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Abstract

New Cs-lepidocrocite nanotubular arrays were successfully prepared from anodically grown TiO2 nanotubes by hydrothermal conversion using CsOH in a water–ethanol mixed solvent. The obtained open nanotubular structure consists of plate-like nano-crystals, reflecting a preferred facet growth of the lepidocrocite with a 2-dimensional layered crystal structure. N-Doping of the Cs-lepidocrocite nanotubular layer was carried out by annealing in NH3 gas. The N-doped sample showed an incident photon to current conversion efficiency (IPCE) of 1.43% at 450 nm, which is 57% higher than conventional N-doped anatase TiO2 nanotubes.

Graphical abstract: N-Doped lepidocrocite nanotubular arrays: hydrothermal formation from anodic TiO2 nanotubes and enhanced visible light photoresponse

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Publication details

The article was received on 03 Sep 2012, accepted on 28 Nov 2012 and first published on 11 Dec 2012


Article type: Paper
DOI: 10.1039/C2TA00174H
Citation: J. Mater. Chem. A, 2013,1, 1860-1866
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    N-Doped lepidocrocite nanotubular arrays: hydrothermal formation from anodic TiO2 nanotubes and enhanced visible light photoresponse

    T. Nakajima, C. Lee, Y. Yang and P. Schmuki, J. Mater. Chem. A, 2013, 1, 1860
    DOI: 10.1039/C2TA00174H

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