Fe3O4/g-C3N4复合异质结的构建及紫外光降解罗丹明B

doi:10.11896/cldb.23080020

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Abstract In this work, firstly, g-C₃N₄ was obtained by thermal polymerization, and Fe₃O₄ was synthesized by solvothermal method. Subsequently, a series of g-C₃N₄/Fe₃O₄ composite photocatalysts were prepared by high-temperature calcination via changing the mass ratio. The morpho-logy, crystal structure, chemical bond structure and fluorescence intensity of g-C₃N₄/Fe₃O₄ composites were characterized by scanning electron microscopy (SEM), X-ray diffractometer (XRD), infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and fluorescence spectrophotometer. The degradation of rhodamine B via different mass ratios of g-C₃N₄/Fe₃O₄ composites was tested by UV-Vis-IR spectrometer under the irradiation of 250 W ultraviolet lamp, and the photocatalytic activity of the composites photocatalysts was studied. Moreover, the recycling experiment of the optimal mass ratio (20/80) g-C₃N₄/Fe₃O₄ composites was carried out to test the degradation of rhodamine B solution. The results show that the degradation rate of 5 mg/L rhodamine B reaches 95.8% by the mass ratio (20/80) g-C₃N₄/Fe₃O₄ composite within 2 hours, and it's degradation rate to rhodamine B still reaches 82.4% after five recycle times. It shows good photocatalytic activity and catalytic stability for the (20/80) g-C₃N₄/Fe₃O₄ composite.

Key words： photocatalysis g-C₃N₄ Fe₃O₄ high temperature calcination method recyclable

Published: 10 December 2024 Online: 2024-12-10

CLC number:

TQ323.4

Fund:National Natural Science Foundation of China (52263004), and Shaanxi Provincial Natural Science Foundation (2021JM-486).

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	Articles by authors
	ZHU Yan
	LIU Hailong
	JIA Shikui
	LI Yunfeng
	SHOU Hao

Cite this article:

ZHU Yan,LIU Hailong,JIA Shikui, et al. Preparation of Fe₃O₄/g-C₃N₄ Composite Heterojunction and Its Photodegradation of Rhodamine B[J]. Materials Reports, 2024, 38(23): 23080020-7.

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http://www.mater-rep.com/EN/10.11896/cldb.23080020 OR http://www.mater-rep.com/EN/Y2024/V38/I23/23080020

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