Enhanced photocatalytic degradation properties of nitrogen-doped titania nanotube arrays

Nitrogen-doped TiO 2 nanotubes array were synthesized to improve the photocatalytic efficiency by annealing the anodized titania nanotubes with ammonia at 500 °C. Detailed structural analysis revealed that the nitrogen-doped titania nanotubes are of highly ordered structure, and exhibit a decreased...

Full description

Saved in:
Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2009-12, Vol.19 (6), p.1583-1587
Main Authors: DONG, Lin, CAO, Guo-xi, MA, Ying, JIA, Xiao-lin, YE, Guo-tian, GUAN, Shao-kang
Format: Article
Language:English
Subjects:
nanotubes
nitrogen-doping
photocatalytic degradation
TiO 2
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Nitrogen-doped TiO 2 nanotubes array were synthesized to improve the photocatalytic efficiency by annealing the anodized titania nanotubes with ammonia at 500 °C. Detailed structural analysis revealed that the nitrogen-doped titania nanotubes are of highly ordered structure, and exhibit a decreased phase transformation temperature compared with those that are not doped, as evidenced by the decrease in full width at half maximum (FWHM) of the (110) peak of rutile phase and the occurrence of the typical Raman peaks of rutile phase at 196, 235, 442, 610 cm −1. According to the photocatalytic degradation of methyl orange under visible light irradiation, the nitrogen-doped TiO 2 nanotubes exhibit enhanced photocatalytic efficiency compared with their non-doped nanotubes, which might be a result of either the nitrogen doping induced band gap narrowing or the synergistic effect produced by both nitrogen and fluorine dopants.
ISSN:1003-6326
DOI:10.1016/S1003-6326(09)60074-1