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International Journal of Photoenergy
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International Journal of Photoenergy
/
2013
/
Article
/
Tab 3
/
Research Article
Photocatalytic Decolourization of Direct Yellow 9 on Titanium and Zinc Oxides
Table 3
Pseudofirst-order rate constants
and half-live times
for the photocatalytic degradation of DY9 (80
μ
mol·L
−1
) at different initial pH.
pH
TiO
2
ZnO
/min
−1
/min
/min
−1
/min
2
0.0282
25
0.0133
52
7
0.0226
31
0.0300
23
10
0.0183
38
0.0349
20