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• W4212789898 abstract "g–C 3 N 4 nanosheets were first synthesized by calcining the mixture of hydrochloric acid-pretreated melamine and ammonium chloride. Then, by the aiding of solvothermal method and hydrofluoric acid as morphology modifier, 001-TiO 2 /g–C 3 N 4 (TCN-X, [Formula: see text], 3, 2, 1) nanocomposites were synthesized using g–C 3 N 4 nanosheets and tetrabutyl titanate, with the mass ratio of g–C 3 N 4 to TiO 2 was 5:1, 3:1, 2:1 and 1:1, respectively. The as-synthesized samples were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscopy, Fourier transform infrared spectroscopy, nitrogen adsorption–desorption method, ultraviolet–visible diffuse reflectance spectrum, photoluminescence spectrum, etc. Their photocatalytic properties were evaluated under visible light irradiation with rhodamine B (RhB) as the target pollutant. The results reveal that the TCN-3 composites had a large specific surface area of 67.38[Formula: see text]m 2 /g and consisted of g–C 3 N 4 nanosheets and anatase TiO 2 crystals about 10–20[Formula: see text]nm in size. The (001) crystal planes of TiO 2 can be easily observed in TCN-X composites. All TiO 2 /g–C 3 N 4 composites exhibited excellent photocatalytic activity compared with the pure g–C 3 N 4 did. The photocatalytic property of TCN-X samples varied with the mass ratio of g–C 3 N 4 to TiO 2 , and TCN-3 presented the optimum photocatalytic performance. In total, 50[Formula: see text]mg of TCN-3 completely degraded 50[Formula: see text]mL and 100[Formula: see text]mL of RhB solution (10[Formula: see text]mg/L) in 15[Formula: see text]min and 40[Formula: see text]min, respectively. The reaction rate constant of TCN-3 was 6.7 times as large as that of pure g–C 3 N 4 . TCN-3 also presented outstanding activity for the photocatalytic degradation of the colorless tetracycline solution. The significant improvement in photocatalytic activity of TCN-3 was attributed to the evenly distribution of TiO 2 on g–C 3 N 4 , the enhanced specific surface area and the construction of 001-TiO 2 /g–C 3 N 4 heterojunction between the g–C 3 N 4 nanosheets and the (001) crystal planes of anatase TiO 2 , which greatly reduced the recombination rate of the photo-generated electron and hole." @default.
• W4212789898 created "2022-02-24" @default.
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• W4212789898 date "2022-01-01" @default.
• W4212789898 modified "2023-09-30" @default.
• W4212789898 title "Significant Improvement of Photocatalytic Activity of TiO₂/g–C₃N₄ Composite Synthesized by the Aiding of Hydrothermal Method" @default.
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• W4212789898 doi "https://doi.org/10.1142/s1793292022500072" @default.
• W4212789898 hasPublicationYear "2022" @default.
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