Nano-zinc oxide(ZnO),as an important wide bandgap semiconductor material,has been widely applied in solar cells,photocatalysts and other fields.However the photocatalytic performance of ZnO is badly affected by its band structure.By doping transition metal ions,the band structure of ZnO can be changed and its influence on the visible spectrum can be broadened.In this paper,single-doped and co-doped nano-zinc oxide materials were prepared by low-temperature hydrothermal method followed with high-temperature pyrolysis,and the structure,morphology and photocatalytic degradation capacity were characterized by X-ray diffraction(XRD),scanning electron microscope(SEM)and ultraviolet-visible spectrometer(UV-VIS).And the effect of reaction temperature on the photocatalytic degradation performance of ZnO was studied.The results showed that both doping and reaction temperature have a significant effect on the degradation performance of methylene blue.The copper-nickel co-doped zinc oxide prepared by hydrothermal method at 150℃behaved the best photocatalytic effect on methylene blue,and its photocatalytic degradation efficiency can reach 99.1%.
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