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TiO2/CuO films obtained by citrate precursor method for photocatalytic application

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Figure 5 illustrates the absorption decrease, at 550 nm  of the Rhodamine B solutions, during exposition time
Figure 3. Micrographs of FEG-SEM of TiO 2 -films obtained by citrate precursor method: (a) Pure TiO 2  films; (b) TiO 2 -CuO  5 mol%; (c) TiO 2 -CuO 10 mol%
Figure 4. Absorption spectrum obtained for Rhodamine B solutions considering the exposition  time under ultraviolet light within the interval of 300 to 700 nm using pure TiO 2 -films
Figure 6. Remission function of Kubelka-Munk [39] of the  TiO 2 /CuO powders obtained by citrate precursor method

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