Synthesis and Photocatalytic Activity of Fluorine DOPED-g-C₃N₄

Abstract:

F-doped graphitic carbon nitride was synthesized via simple solid-state calcination of mixture with various weight ratios of urea, as precursor, and ammonium fluoride, as modifying agent. The obtained materials were characterized by a number of modern methods such as X-ray diffraction, Scanning electron microscopy, Infrared spectroscopy, Ultraviolet-visible diffuse reflectance spectroscopy, Thermo-gravimetry analysis, X-ray photoelectron spectroscopy, which all demonstrated the successful modification of g-C₃N₄ by fluorine. The experimental results illustrated that the doped sample, in which weight ratio of urea and ammonium fluoride equals 93:7 respectively, performs the highest photo-degradation efficiency of Rhodamine B up to 75 % after 7-hour visible light irradiation. The doping effect of fluorine on photo-catalytic activity of g-C₃N₄ was also discussed within supporting information of DFT calculation.

• Periodical: Applied Mechanics and Materials (Volume 889)
• Pages: 24-32
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.889.24
• Online since: March 2019
• Authors: Nguyen Van Phuc, Doan Tran An, Nguyen Ngoc Tri, Tran Huu Ha, Tran Thi Thu Hien, Nguyen Phi Hung, Vien VO
• Keywords: Fluorine Doped g-C₃N₄, Photocatalysis, Rhodamine B

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