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The zinc oxides (ZnO) films with different bismuth (Bi) doping were prepared by spray pyrolysis deposition at 450°C with aqueous solution contained zinc acetate and bismuth nitrate precursors. Under ultra-violate light illumination, the photodegradation of methyl orange for these ZnO films were studied. In the singly doped ZnO, the 5% Bi doped ZnO shows the relatively high photocatalytic activity...
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