Abstract
In order to enhance the photocatalytic performance of carbon nitride, mesoporous graphitic carbon nitride (mpg-C3N4) nanocomposite photocatalyst (mpg-C3N4/SnO2) with high photocatalytic activity was synthesized by in situ growth method in this paper. The prepared samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and UV–Vis diffuse reflectance spectra (DRS). Also, the photocatalytic properties of mpg-C3N4/SnO2 nanocomposite were studied by photocatalytic degradation of Rhodamine B (RhB) solution under visible light irradiation. After 120 min of visible light irradiation, the photocatalytic activity of the synthesized mpg-C3N4/SnO2 nanocomposite increased significantly, the degradation effect of the mpg-C3N4/SnO2 composite sample can reach up to 93%, and higher than that of pure mpg-C3N4 and SnO2. The mesoporous structure of mpg-C3N4/SnO2 nanocomposite could enlarge the contact area with dye and increase light absorption, and the presence of heterojunction on the interface between mpg-C3N4 and SnO2 further enhanced the separation efficiency of photogenerated electron hole pairs, sequentially improves the photocatalytic performance of the mpg-C3N4/SnO2 nanocomposite.
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The authors are grateful to financial support from National Natural Science Foundation of China (51572115).
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Huang, Q., Zhao, Q., Yang, C. et al. Facile synthesis of mesoporous graphitic carbon nitride/SnO2 nanocomposite photocatalysts for the enhanced photodegradation of Rhodamine B. Reac Kinet Mech Cat 129, 535–550 (2020). https://doi.org/10.1007/s11144-019-01712-8
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DOI: https://doi.org/10.1007/s11144-019-01712-8