Study on Fe2O3/g-C3N4 photocatalytic degradation of Rhodamine B

doi:10.3969/j.issn.1000-5641.2021.03.015

Abstract

Abstract:

In order to improve the low specific surface area of g-C₃N₄, three-dimensional (3D) porous g-C₃N₄ was prepared using high temperature thermal polymerization. Fe₂O₃/g-C₃N₄ catalyst was prepared by compositing the g-C₃N₄ with Fe₂O₃ to improve its visible light response. The decolorization rate of the Fe₂O₃/g-C₃N₄ catalyst reached 100% in 30 minutes with a g-C₃N₄ content of 900 mg, Rhodamine B (RhB) concentration of 20 mg·L^–1, and H₂O₂ content of 15 mmol. The Fe₂O₃/g-C₃N₄ catalyst also demonstrated good performance in degrading other organics; the degradation rates of Methyl orange (MO) and Tetracycline (TC) reached 80% and 90%, respectively, in 30 minutes. This photocatalytic mechanism was explored by active group capture experiments, and the results show that h⁺ and ·OH play an important role in the progress of photocatalysis.

Key words: g-C₃N₄, Fe₂O₃, Rhodamine B(RhB), photocatalytic

CLC Number:

O469

Qinghua XI, Yiqiang HUANG, Jiaxiang CHEN, Er NIE, Zhuo SUN. Study on Fe₂O₃/g-C₃N₄ photocatalytic degradation of Rhodamine B[J]. Journal of East China Normal University(Natural Science), 2021, 2021(3): 151-160.

Figures/Tables 11

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References 29

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样品	比表面积/(m²·g^–1)	孔容/(cm³·g^–1)	孔径/nm
CN-1	61	0.35	2.98
CN-2	72	0.36	3.84
CN-3	72	0.36	3.84
CN-4	74	0.35	3.82
CN-5	74	0.35	3.83

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Study on Fe₂O₃/g-C₃N₄ photocatalytic degradation of Rhodamine B

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