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Core–shell-structured MOF-derived 2D hierarchical nanocatalysts with enhanced Fenton-like activities

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Abstract

Fenton-like reactions activated by peroxymonosulfate for the efficient and environmentally friendly degradation of refractory pollutants have gained significant attention in recent years. However, the fabrication of Fenton-like catalysts with adequate activity and stability towards toxic benzene derivates is still a long-term goal. Herein, we report a novel Fenton-like 2D porous carbon catalyst with co-anchored Co-Nx sites and nanocrystalline Co by annealing core–shell bimetallic metal–organic framework (MOF)-coated graphene oxide. During carbonization, the N-ligands in the MOF provide self-pyrolyzed reducing gases, while the Co2+ salts and gradually formed nanocrystalline Co serve as the in situ catalysts for the growth of Co/Co-Nx co-doped carbon nanotubes, which avoids the use of the chemical vapor deposition process. Benefiting from the unique core–shell MOF nanostructures, the fabricated 2D hierarchical catalysts display delicate micro/mesoporous structures, conductive carbon frameworks, and abundant Co/Co-Nx/pyridinic-N active sites. These unique advantages endow the catalysts with high degradation efficiencies towards different toxic benzene-derived compounds, such as bisphenol A, phenol, biphenyl, naphthalene, and even benzene-derived macromolecules. This research not only provides Fenton-like catalysts with excellent potential for the water remediation of benzene-derived contaminants, but also takes a step toward the production of advanced metal/metal-N co-doped 2D porous carbon for diverse catalytic and energy applications.

Graphical abstract: Core–shell-structured MOF-derived 2D hierarchical nanocatalysts with enhanced Fenton-like activities

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Supplementary files

Article information


Submitted
04 Nov 2019
Accepted
02 Jan 2020
First published
03 Jan 2020

J. Mater. Chem. A, 2020, Advance Article
Article type
Paper

Core–shell-structured MOF-derived 2D hierarchical nanocatalysts with enhanced Fenton-like activities

W. Shao, C. He, M. Zhou, C. Yang, Y. Gao, S. Li, L. Ma, L. Qiu, C. Cheng and C. Zhao, J. Mater. Chem. A, 2020, Advance Article , DOI: 10.1039/C9TA12099H

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