磁性多壁碳纳米管的制备及用于类芬顿反应催化降解橙黄Ⅱ

doi:10.11896/cldb.22120166

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Abstract In order to enhance the catalyst efficiency of heterogeneous Fenton-like system, Fe₃O₄-modified multi-walled carbon nanotubes (Fe₃O₄-MWCNTs) nanocomposites were synthesized by in situ growth and direct mixing methods, respectively. And their effectiveness as Fenton-like catalysts for the degradation of the azo dye orange Ⅱ was studied in this work. The composition, structure, morphology, and properties of the prepared Fe₃O₄-MWCNTs magnetic nanocomposites were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), and magnetic property detection (VSM). The results show that the Fe₃O₄-MWCNTs nanocomposites obtained by in situ growth method have better magnetic properties and the Fe₃O₄ nanoparticles are uniformly distributed on the surface of carbon nanotubes. The degradation experiments indicated that the removal efficiency of orange Ⅱ reached up to 99.9% after 6 h at 25 ℃ under the following conditions: concentration of orange Ⅱ at 50 mg/L, H₂O₂ dosage was 555 μL, Fe₃O₄-MWCNTs magnetic nanocomposites dosage was 0.025 g, pH 2.5. The Fe₃O₄-MWCNTs composite also shows excellent stability and reproducibility, with the removal of orange Ⅱ remaining above 97% after four cycles of magnetic separation.

Key words： Fenton-like reaction Fe₃O₄ multi-walled carbon nanotubes orange Ⅱ degradation

Published: 10 May 2024 Online: 2024-05-13

CLC number:

TQ426.64

Fund:Yunnan Fundamental Research Projects (202201AT070140) and Yunnan Ten Thousand Talents Plan Young & Elite Talents Project (YNWR-QNBJ-2019-085).

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	Articles by authors
	MIAO Qingshan
	YANG Jing
	ZHANG Tiecheng
	LI Wenpeng
	SHAN Shaoyun
	SU Hongying

Cite this article:

MIAO Qingshan,YANG Jing,ZHANG Tiecheng, et al. Preparation of Magnetic Multi-walled Carbon Nanotubes as Catalyst for Degradation of Orange Ⅱ by Fenton-like Reaction[J]. Materials Reports, 2024, 38(9): 22120166-7.

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https://www.mater-rep.com/EN/10.11896/cldb.22120166 OR https://www.mater-rep.com/EN/Y2024/V38/I9/22120166

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