Nitrogen-deficient g-C3N4 photodegradation of rhodamine B
The g-C3N4 photocatalyst materials with nitrogen defects were prepared by a simple one-step calcination method,and the crystallinity,morphology,characteristic functional groups and optical properties of the prepared photocatalysts were characterized by X-ray powder diffraction(XRD),Fourier transform infrared spectroscopy(FT-IR),Scanning electron microscopy(SEM)and Ultraviolet-visible diffuse reflectance absorption spectroscopy(UV-vis).The photocatalytic properties of the prepared photocatalysts were also investigated by photodegradation of Rhodamine B.The corresponding experimental results show that ND-g-C3N4 has excellent photodegradation performance when the concentration of rhodamine B is 10 mg/L and the amount of catalyst is 20 mg,and the photodegradation efficiency of Rhodamine B reaches 100%within 20 min.This indicates that the introduction of defects will effectively improve the light absorption range of pristine g-C3N4,promote the separation of photogenerated electron and hole pairs,and enhance photocatalytic efficiency.This study provides some theoretical guidance value for the treatment of organic pollutants and some practical application prospects.
nitrogen defectsgraphite carbon nitridephotodegradationrhodamine B
万方数据
