NiFe Layered Double Hydroxide (LDH) Nanosheet Catalysts with Fe as Electron Transfer Mediator for Enhanced Persulfate Activation

  • Dongting Yue
    Dongting Yue
    School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
    More by Dongting Yue
  • Xuan Yan
    Xuan Yan
    School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
    More by Xuan Yan
  • Chao Guo
    Chao Guo
    School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
    More by Chao Guo
  • Xufang Qian
    Xufang Qian
    School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
    More by Xufang Qian
  • , and 
  • Yixin Zhao*
    Yixin Zhao
    School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
    Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
    *Phone: +86-21-54745704. Email: [email protected]
    More by Yixin Zhao
Cite this: J. Phys. Chem. Lett. 2020, 11, 3, 968–973
Publication Date (Web):January 18, 2020
Copyright © 2020 American Chemical Society
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A highly efficient, durable, and cost-effective Fenton-like catalyst is desired to produce the sulfate radicals (SO4) for energy and environmental applications. The M(n+1)+/Mn+ redox cycle in metal catalysts requires a high redox potential for SO4 generation. NiFe layered double hydroxide (LDH) nanosheets with a suitable redox potential for persulfate (PDS) activation were prepared via incorporating Fe into the Ni based LDH. With the help of Fe, the charge-transfer kinetics for the reduction of Ni3+ to Ni2+ was improved and the formation of unwanted Ni component with higher oxidation state was suppressed. The incorporated Fe as the electron transfer mediator enhanced the process of Ni(OH)2/NiOOH redox cycle. Therefore, NiFe LDH exhibited superior performance in PDS activation with exceptionally high activity for the phenolic compounds’ degradation in neutral and basic conditions. This work is expected to inspire the rational design of LDHs based catalysts for PDS activation.

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  • Chemicals and reagents, synthesis and characerization, tests and methods; figures of SEM, TEM, and HRTEM images, AFM profiles, kinetic curves, percentage of PDS remaining after reaction, intermediate test of 4-isopropenylphenol, HPLC diagrams, effect of PDS dosage on BPA removal efficiency, XRD, Raman, and FTIR spectra, molar ratios, adsorption–desorption isotherms; tables of ICP results, comparison of catalysts, BET surface area of catalysts (PDF)

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