Novel high-entropy ceramic/carbon composite materials for the decomposition of organic pollutants

The Fenton reaction is a commonly used technique for the remediation of industrial pollution, but hydrogen peroxide required in this reaction is highly hazardous and the enormous volume of iron sludge byproducts increases significantly the cost of pollution remediation. To address this issue, this s...

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Published in:Materials chemistry and physics 2022-01, Vol.275, p.125274, Article 125274
Main Authors: Chiu, Ching-Ting, Teng, Yung-Jen, Dai, Bai-Hao, Tsao, I-Yu, Lin, Wei-Chun, Wang, Kuan-Wen, Hsu, Liang-Ching, Chang, Yu-Chung, Li, Chia-Tzu, Thai Nguyen, Hien Thi, Chiang, Ching-Yu, Hung, Wei-Hsuan
Format: Article
Language:English
Subjects:
Ceramics
Composite materials
Contaminants
Decomposition reactions
Dyes
Electro-Fenton reaction
Electrocatalytic
Entropy
Graphene
H2O2 production
High-entropy ceramics
Hydrogen peroxide
Pollutants
Remediation
Sludge
Water pollution degradation
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Summary:The Fenton reaction is a commonly used technique for the remediation of industrial pollution, but hydrogen peroxide required in this reaction is highly hazardous and the enormous volume of iron sludge byproducts increases significantly the cost of pollution remediation. To address this issue, this study examined the efficacy of the electro-Fenton reaction in degrading pollutants utilizing a complex of graphene and a high-entropy ceramic catalyst, and evaluated the potential of functionalized high-entropy materials for the decomposition of pollutants. The degradation of organic water contaminants was investigated utilizing a novel composite of graphene and (AlCrCuFeNi)O high-entropy ceramics, to increase the generation of H2O2 in the electro-Fenton process. Rapid calcination produced five-element (AlCrCuFeNi)O high-entropy ceramics to enhance both the electrocatalytic activity and the stability. Because of the high electro-Fenton efficiency of the high-entropy ceramics, the graphene/(AlCrCuFeNi)O HEC cathode effectively removed 99% methyl orange within 90 min of operation. •Development of graphene combined with HEC, a new promising G@HEC is demonstrated in the field of environmental catalysts.•The G@HEC were analyzed and studied, interestingly, some HECs were reduced to form a high-entropy alloy phase.•The G@HEC cathode possessed a significant degradation effect, which can decompose 99% of pollutants within 90 min.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2021.125274