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International Journal of Photoenergy
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International Journal of Photoenergy
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2014
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Article
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Fig 4
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Research Article
Preparation of Ni Doped ZnO-TiO
2
Composites and Their Enhanced Photocatalytic Activity
Figure 4
XPS spectra of samples: (a) XPS survey spectra, (b) Zn2p, (c) Ti2p, and (d) O1s state.
(a)
(b)
(c)
(d)