Pyrolysis synthesized g-C 3N 4 for photocatalytic degradation of methylene blue

Abstract

Graphitic carbon nitride (g-C 3N 4) was synthesized at 520°C by the pyrolysis of cyanamide, dicyandiamide, and melamine. The samples were characterized by Xray diffraction (XRD), UV-visible diffuse reflectance spectra, Fourier transform infrared spectroscopy (FT-IR), and elemental analyzer. The photocatalytic activity of g-C 3N 4 was evaluated by the photodegrading experiments of methylene blue (MB). The results indicated that g-C 3N 4. A photocatalytic mechanism presumed the MB photodegradation over the C 3N 4 photocatalyst is attributed to photogenerated electron impelled multistep reduction of O 2. © 2013 Gang Xin and Yali Meng.