▎ 摘　　要

Electrocatalysis as effective method for organic pollutants treatment, is greatly depended on the anode material. Graphene as wide used inorganic metal-free material could greatly improve by heteroatom doping. In this study, phosphorus-doped graphene (P-GN) was successfully prepared with triphenylphosphine as the phosphorus source and applied in the electrocatalytic oxidation of N-(4-hydroxyphenyl)ethanamide. The doping morphology of phosphorus was controlled by annealing temperature, and rising temperature could gradually alter the morphology of phosphorus from P-C to P-O. P-GN (20%-500 degrees C) had the best catalytic efficiency (91%) after 90 min of reaction, and the most active P species were confirmed as -CPO3, P-C, P-O, and -PO2 (from XPS). Those P species as catalyst could accelerate the generation of active chlorine for oxidation. However, the existence of O-2 will weaken the seizing of electrons and increase the energy barrier of Cl- connection. The discussion of "P species regulate -> P active species -> active chlorine generation and destruction" could provide deep understanding of underlying mechanism.