Preparation and Performance of BiOCl/UiO-66-NH2 Composite Photocatalytic Materials
A BiOCl/UiO-66-NH2 composite photocatalyst was successfully synthesized by solvothermal method and characterized in detail for its morphology,structure,and photocatalytic performance via X-ray powder diffraction(XRD),Fourier transform infrared spectroscopy(FT-1R),scanning electron microscopy(SEM),and N2 adsorption-desorption Brunauer-Emmett-Teller(BET)analysis.The results show that the UiO-66-NH2 particles are uniformly embedded on the flower-like BiOCl structure,forming a close-contact interface.The composite photocatalyst exhibits excellent photocatalytic performance for the degradation of rhodamine B(RhB)under visible light irradiation.It could completely remove RhB from the solution within 40 min of visible light irradiation,and degradation ability is 3.53 times higher than that of pure BiOCl.The enhancement of photocatalytic activity is attributed to the formation of a Z-scheme heterojunction between BiOCl and UiO-66-NH2,which facilitated efficient separation and transfer of photogenerated charge carriers.Moreover,the composite photocatalyst exhibits excellent stability with a RhB degradation rate of over 90％after four consecutive cycles.
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