磁性氧化石墨电催化活性及净化印染废水效能

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Abstract Magnetic graphite oxide (MGO) catalyst was synthesized using potassium ferrate as iron precursor and oxidizing graphite oxide mineral. It was used to fabric cathode (MGO/CB) by adding carbon black (CB) on a carbon fibre cloth substrate, which can reduce dissolved oxygen to produce reactive oxygen species (ROS) for the treatment of simulated wastewater containing reactive red X-3B dye. The morphology and electrochemical properties of MGO were measured by scan electron microscope, X-ray diffraction, X-ray photoelectron spectroscopy and electrochemical working station. The surface of the lamellar MGO possessed iron oxide nanoparticles with different crystal structures. These active species showed synergistic effect in electrocatalysis. The crystal phase and catalytic activity of ferric oxide were influenced by calcination temperature. At 300^oC of calcination, MGO/CB cathode exhibited high electrochemical treatment efficiency for reactive red X-3B degradation. It was found that ¹O₂ and ^·O₂^- were dominant ROS. The decolorization reached 100% and COD_cr removal reached 77.1% in 4h of electrolysis. Magnetic graphite oxide was stable and can be reused in successive cycles.

Key words： active red X-3B electrochemical oxidation magnetic graphite oxide iron oxide wastewater treatment

Received: 08 October 2021

PACS:

X703.1

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	Articles by authors
	FU Ming-hao
	LU Jun
	CHENG Quan-yuan
	LIU Xiao-chen
	ZHENG Hua

Cite this article:

FU Ming-hao,LU Jun,CHENG Quan-yuan等. Magnetic graphite oxide as efficient catalyst for electrochemical treatment of printing and dyeing wastewater[J]. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(4): 1672-1680.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2022/V42/I4/1672

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