Preparation and properties of magnetic g-C3N4/CoFe2O4 photocatalyst

Abstract A recyclable magnetic composite g-C₃N₄/CoFe₂O₄ was prepared by ultrasonic coupled with low-temperature calcination process. The g-C₃N₄/CoFe₂O₄ was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and ultraviolet visible diffuse reflectance spectroscopy (DRS). The photocatalytic activity of the g-C₃N₄/CoFe₂O₄ was investigated using Rhodamine B (RhB) as the simulated pollutant. The results show that when the mass ratio of g-C₃N₄ to CoFe₂O₄ is 3∶1, g-C₃N₄/CoFe₂O₄ exhibits the best photocatalytic activity. The degradation rate of RhB can still reach 92% after repeated use for 5 times, showing good stability in practical application. The g-C₃N₄/CoFe₂O₄ can be separated and recovered easily under an external magnetic field. Studies on the photocatalytic degradation mechanism showed that ·OH and ·O^-₂ are the main active species for photocatalytic degradation of RhB.

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	LUO Jie
	CHANG Wei
	ZHANG Li
	LEI Chao
	LI Yunfeng
	LIU Bin

Keywords： photocatalysis magnetic g-C₃N₄/CoFe₂O₄ organic pollutants

Received 2021-12-20;

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LUO Jie, CHANG Wei, ZHANG Li, LEI Chao, LI Yunfeng, LIU Bin.Preparation and properties of magnetic g-C₃N₄/CoFe₂O₄ photocatalyst[J] Chemcial Industry and Engineering, 2023,V40(5): 1-7

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