4.8 Review

Nitrogen-doped carbon-based single-atom Fe catalysts: Synthesis, properties, and applications in advanced oxidation processes

Journal

COORDINATION CHEMISTRY REVIEWS
Volume 475, Issue -, Pages -

Publisher

ELSEVIER SCIENCE SA
DOI: 10.1016/j.ccr.2022.214874

Keywords

Single-atom Fe; Carbon-based; Environmental catalysis; Advanced oxidation processes; Organic pollutants

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Single-atom catalysts (SACs) combining the advantages of both heterogeneous and homogeneous catalysts have become the forefront in advanced oxidation processes (AOPs). Carbon-based single-atom Fe catalysts (Fe-SACs) with nitrogen doping have attracted attention in environmental catalysis due to their high activity, selectivity, and stability. However, there is a lack of comprehensive reviews on the use of carbon-based Fe-SACs for AOPs degradation of organic water pollution.
Single-atom catalysts (SACs) combine the benefits of both heterogeneous and homogeneous catalysts, they have emerged as the frontier in advanced oxidation processes (AOPs). The isolated active metal cen-ters of carbon-based single-metal atom catalysts can be utilized to the maximum extent. They have recently gained popularity in the realm of environmental catalysis because of their high activity, selectiv-ity, and structural/chemical stability. Nitrogen-doped carbon-based Single-atom Fe catalysts (Fe-SACs) have a high density of the active site, low metal leaching rate and good catalytic performance, and thus have attracted the attention of researchers. However, there seems to be a lack of thorough and critical reviews on the use of carbon-based Fe-SACs for AOPs degradation of organic water pollution. In this review, we focused on the Fe-SACs made of carbon-based materials and their synthesis methods and physical characteristics. We also investigated at how Fe-SACs were used to effectively eliminate contam-inants in different AOPs. In addition, the degradation mechanisms and stability of carbon-based Fe-SACs have been discussed. Finally, the advantages of carbon-based Fe-SACs in the catalytic degradation of pol-lutants are summarized, and the future opportunities and prospects of carbon-based Fe-SACs in the cat-alytic field are proposed.(c) 2022 Elsevier B.V. All rights reserved.

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