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 °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 O₂ 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.

电催化作为处理有机污染物的有效方法，在很大程度上取决于阳极材料。石墨烯作为广泛使用的无机无金属材料，可以通过杂原子掺杂大大改善。本研究成功地以三苯基膦为磷源制备了掺磷石墨烯（P-GN），并将其应用于N-（4-羟苯基）乙酰胺的电催化氧化。磷的掺杂形态受退火温度的控制，温度的升高会逐渐改变磷的形态，从PC到PO。反应90分钟后，P-GN（20％–500°C）的催化效率最高（91％），并且活性最高的P种类被确认为-CPO ₃，PC，PO和-PO ₂（来自XPS）。那些作为催化剂的P物种可以促进氧化活性氯的生成。但是，O ₂的存在会削弱电子的捕获并增加Cl连接的能垒。对“ P物种调控→P活性物种→活性氯的产生和破坏”的讨论可以提供对潜在机理的深刻理解。