Abstract: The graphite-like carbon nitride (g-C3N4) two-dimension (2D) nanosheet were successfully prepared by a ball-mi-lling and ultrasound process using melamine as raw material. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), atomic force microscope (AFM) and photoluminescence spectrum (PL). The XRD results showed that g-C3N4 2D nanosheet had the same crystal phase as g-C3N4. The exfoliated products were comprised of only 5 C-N layers. The g-C3N4 2D nanosheet improved the absorption of visible light and accelerated the separation of photo-generated electron-hole pairs. The photocatalytic performance of the samples was evaluated by photocatalytic oxidation of rhodamine B (RhB) under visible light irradiation. The results show that g-C3N4 2D nanosheet exhibited a much higher degradation rate which is 2 times as high as that of pure g-C3N4.
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2017, Vol. 31 
