A carbon nanotubes-encapsulated iron-nickel alloy on monolithic nickel foam for boosting periodate activation
Date
2025
Authors
Yao, Y.
Wang, W.
Zhang, L.
Wang, Y.
Ma, Z.
Wang, S.
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Journal article
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Chemical Engineering Science, 2025; 305:121159-1-121159-12
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Yunjin Yao, Wei Wang, Lijie Zhang, Yaoyao Wang, Ziwei Ma, Shaobin Wan
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Abstract
A nickel foam catalyst composed of an iron-nickel alloy encapsulated by carbon nanotubes (FeNi-NHC@NF) was prepared through hydrothermal and gas diffusion methods, and utilized to activate periodate (PI) for organic degradation. The in situ-formed catalyst exhibits excellent catalytic performance in complex aqueous matrices across a broad pH range. Characterizations indicate that electron transfer is crucial for enhancing organic elimination. The unique structure, combining graphitized carbon and nickel foam, provides exceptional electrical conductivity and specific surface area, thereby significantly enhancing the catalytic activity. Interactions between Fe/Ni-N x , pyridine N-sites, and graphitized carbon with PI facilitate the generation of surface-bound active species. This heterostructure offers a rich supply of active sites with high intrinsic activity, while the carbon nanotube coating enhances electron transport and prevents material agglomeration during prolonged operation, ensuring excellent durability. This study presents an innovative strategy for the design of efficient monolithic catalysts for organic oxidation and various applications.
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