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Using X-ray diffraction,transmission electron microscopy,Brunauer-Emmett-Teller surface area measurement,ultraviolet-visible diffuse reflection spectra,and photoluminescence spectroscopy,the effect of mechanical milling on the photocatalytic activity of g-C3N4 photocatalyst was investigated.The rhodamine B,as a photodegrading goal,was used to evaluate the photocatalytic activity of g-C3N4.The experimental results indicate that the milling treatment is an effective method to improve the photocatalytic activity of g-C3N4.The enhanced photocatalytic activity was attributed to the improvement in catalyst’s surface area and dye adsorption on catalyst surface.Moreover,checking the luminescence properties of g-C3N4,it is found that the photocatalytic active sites on g-C3N4 are likely the same as luminescence sites.
Using X-ray diffraction, transmission electron microscopy, Brunauer-Emmett-Teller surface area measurement, ultraviolet-visible diffuse reflection spectra, and photoluminescence spectroscopy, the effect of mechanical milling on the photocatalytic activity of g-C3N4 photocatalyst was investigated. Rhodamine B , as a photodegrading goal, was used to evaluate the photocatalytic activity of g-C3N4. The experimental results indicate that the milling treatment is an effective method to improve the photocatalytic activity of g-C3N4. The enhanced photocatalytic activity was attributed to the improvement in catalyst’s surface area and dye adsorption on catalyst surface. More over, checking the luminescence properties of g-C3N4, it is found that the photocatalytic active sites on g-C3N4 are likely the same as luminescence sites.