Abstract: The present disclosure provides a method for promoting degradation of polychlorinated biphenyls (PCBs) by Pseudomonas JD37 with nanoscale zero-valent iron (nZVI) and use thereof. The method includes the following steps: adding nZVI and Pseudomonas JD37 in an environment having PCBs, and promoting degradation of the PCBs by the Pseudomonas JD37 with the nZVI. The nZVI increases an active oxygen content produced by extracellular metabolism of the Pseudomonas JD37, thus promoting degradation of the PCBs. Therefore, the method of the present disclosure is suitable for degrading the PCBs in water and soil for environmental restoration.

Abstract: Disclosed are a kilogram-scale high-loading iron single-atom catalyst (Fe SAC), and a preparation method and use thereof. Melamine is dissolved in water to obtain a solution A, and cyanuric acid is dissolved in water to obtain a solution B. An organic ligand and a metal salt are dissolved in water to obtain a solution C. The solution B and the solution C are mixed to obtain a solution D. The solution A and the solution D are mixed to obtain a solution E. The solution E is subjected to standing for precipitation for 8-24 hours and a resulting layered solution E is subjected to suction filtration, and a resulting precipitated powder is dried to obtain a precursor. The precursor is heated to a temperature of 500.0-650.0° C. and held at the temperature for 3.0-6.0 hours to obtain the kilogram-scale high-loading Fe SAC.

Abstract: The present disclosure provides a method for promoting degradation of polychlorinated biphenyls (PCBs) by Pseudomonas JD37 with nanoscale zero-valent iron (nZVI) and use thereof. The method includes the following steps: adding nZVI and Pseudomonas JD37 in an environment having PCBs, and promoting degradation of the PCBs by the Pseudomonas JD37 with the nZVI. The nZVI increases an active oxygen content produced by extracellular metabolism of the Pseudomonas JD37, thus promoting degradation of the PCBs. Therefore, the method of the present disclosure is suitable for degrading the PCBs in water and soil for environmental restoration.