Iron-cobalt alloy nitrogen-doped carbon catalyst with lamellar structure and preparation method of iron-cobalt alloy nitrogen-doped carbon catalyst

The invention discloses a FeCo-coated NC catalyst with a lamellar structure and a preparation method thereof, the catalyst is formed by uniformly embedding FeCo alloy with the particle size of 2-10nm into strip-shaped lamellar structure nitrogen-doped carbon fiber with the length of 2-20mu m, and the catalyst comprises the following components in percentage by mass: 10-20% of Fe, 50-70% of Co, 10-25% of C and 1-5% of N. The preparation method comprises the following steps: (1) preparing a precursor through mutual coordination and coordination of Co, Fe and 2-methylimidazole in N, N-dimethylformamide; (2) introducing polyacrylonitrile in situ as a phase inversion coating agent; (3) soaking a fibrous material in the precursor and drying; and (4) converting the precursor into the FeCo-coated NC catalyst with the lamellar structure under the atmosphere of N2 by virtue of the confinement pyrolysis action of the PAN coating layer by utilizing a thermal driving method. The catalytic degradation efficiency of the cat