ZnO-WO3 Composite Film

ZnO-WO3 composite film is a composite thin film inlaid with ZnO nanocrystals. More specifically, the composite film adopts amorphous WO3 as a matrix, and ZnO nanocrystals are uniformly distributed in the amorphous tungsten oxide. Some experts have prepared ZnO-WO3 composite film on aluminum foil by sol-gel method, and its modification has been carried out with activated carbon. Taking methyl orange aqueous as simulated organic pollutant, photocatalytic degradation performance of ZnO-WO3 films is studied.

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The results show that the degradation rate of methyl orange by using ZnO-WO3 on Al foil can reach 78.54%, when illuminated for 2 h and WO3 mass fraction is 2.5%. Under the illumination of UV light, the degradation rate is as high as 99.89%. When the doping amount of activated carbon is 10 g/L, the obtained ZnO-WO3 composite films are uniform and have good photocatalytic performance. Under visible light, the degradation rate of methyl orange reaches 85.71%.

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