Pyrolysis Synthesized g-C3N4 for Photocatalytic Degradation of Methylene Blue

被引：83

作者：

Xin, Gang ^{[1
]}

Meng, Yali ^{[1
]}

机构：

[1] Dalian Univ Technol, Fac Chem Environm & Biol Sci & Technol, Dalian 116024, Peoples R China

来源：

JOURNAL OF CHEMISTRY | 2013年 / 2013卷

关键词：

GRAPHITIC CARBON NITRIDE; CHEMICAL-SYNTHESIS; WATER; POWDER;

D O I：

10.1155/2013/187912

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Graphitic carbon nitride (g-C3N4) was synthesized at 520 degrees C by the pyrolysis of cyanamide, dicyandiamide, and melamine. The samples were characterized by X ray diffraction (XRD), UV-visible diffuse reflectance spectra, Fourier transform infrared spectroscopy (FT-IR), and elemental analyzer. The photocatalytic activity of g-C3N4 was evaluated by the photodegrading experiments of methylene blue (MB). The results indicated that g-C3N4 obtained from dicyandiamide exhibited higher activity, and the higher C/N molar ratio and degree of condensation increase the photocatalytic activity of g-C3N4. A photocatalytic mechanism presumed the MB photo degradation over the C3N4 photocatalyst is attributed to photogenerated electron impelled multistep reduction of O-2.

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页数：5

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