The laboratory-prepared nitrogen doped titanium dioxide/manocrystalline cellulose-reduced graphene oxide(N-TiO2/NCC-rGO) was used as the carrier,CuCl2 was used as the precursor,Cu/N-TiO2/NCC-rGO composite catalysts were prepared by impregnation and hydrothermal methods respectively.The microstructures of Cu/N-TiO2/NCC-rGO composite materials were characterized utilizing X ray diffraction(XRD),infrared spectroscopy(IR),scanning electron microscope(SEM),fourier transform infrared spectrum(FT-IR) and diffuse reflection spectrum(DRS).The photocatalytic performance of the materials were assessed under blue light irradiation for the phenol degradation,and the effects of loading method and loading amount on the performance of the composites were investigatived.The results shown that the loading of Cu had no influence on the structure of anatase TiO2.The absorption sidebands of Cu/N-TiO2/NCC-rGO prepared by the two loading methods were red-shifted to 482nm and 459nm,respectively,which improved the material's visible region absorption and enhanced photocatalytic activity.Under blue light irradiation,the visible light-catalyzed phenol degradation efficiency of Cu①/N-TiO2/NCC-rGO was 78.91%,and the degradation efficiency of Cu②/N-TiO2/NCC-rGO was 75.08%.The rapid reaction stage changed from 120～180 minutes to 0～60 minutes with the copper impregnated composite,which greatly improved the reaction rate.
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基金资助
陕西省重点研发计划项目(2019SF-263);西安石油大学研究生创新与实践能力培养项目(YCS20211024)
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