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International Journal of Photoenergy
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International Journal of Photoenergy
/
2008
/
Article
/
Fig 3
/
Research Article
Photocatalytic Hydrogen or Oxygen Evolution from Water over S- or N-Doped TiO
2
under Visible Light
Figure 3
XPS spectra of S-doped
and N-doped
. (a) S-doped
, (b) N-doped
.
(a)
(b)