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International Journal of Photoenergy
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International Journal of Photoenergy
/
2013
/
Article
/
Fig 4
/
Research Article
The Photocatalytic Property of Nitrogen-Doped TiO
2
Nanoball Film
Figure 4
UV-vis absorption spectroscopy of undoped and N-doped TiO
2
with the wavelength in the range of (a) 200–800 nm and (b)
versus
curves.
(a)
(b)