Issue 5, 2013
From the journal:

Journal of Materials Chemistry A

N-Doped lepidocrocite nanotubular arrays: hydrothermal formation from anodic TiO2nanotubes and enhanced visible light photoresponse†

Tomohiko Nakajima,ab   Chong-Yong Lee,b   Yang Yangb  and  Patrik Schmuki*b  

* Corresponding authors

a Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, Japan
E-mail: t-nakajima@aist.go.jp
Tel: +81-29-861-6368

b Department of Materials Science, WW4-LKO, University of Erlangen-Nuremberg, Martensstrasse 7, D-91058 Erlangen, Germany
E-mail: schmuki@ww.uni-erlangen.de
Fax: +49-9131-852-7582
Tel: +49-9131-852-7575

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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Article information

DOI
https://doi.org/10.1039/C2TA00174H
Article type
Paper
Submitted
03 Sep 2012
Accepted
28 Nov 2012
First published
11 Dec 2012

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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