In this work, nitrogen-rich graphene-like carbon sheets (N-GLCS) with high specific surface area (488.4 m²/g), narrow pore distribution and high N-doping (18.4 at%) were prepared and applied as both adsorbent and catalyst for the removal of bisphenols. Adsorption experiments demonstrated the high adsorption capacities of the N-GLCS toward bisphenol F (BPF) (222.9 mg/g), bisphenol A (BPA) (317.8 mg/g), and bisphenol C (BPC) (540.4 mg/g). Results showed that about 98.6% of BPA (70 mg/L) was removed at pH 7.0 within 80 min after the adsorption-catalytic degradation process. The N-GLCS also showed a superb reusability for the catalytic oxidative degradation of BPA (70 mg/L) with the removal percentage maintains over 83% after 5 cycles. With the synergistic combination of the excellent adsorption and catalytic properties of the N-GLCS, trace amount of pollutants can be preconcentrated and immobilized at the surface of N-GLCs, at the same time, active radicals were also produced at the surface of the N-GLCS by the activation of peroxydisulfate (PS), and finally the pollutants can be degraded in-situ by the active radicals. These findings provide a new avenue towards the efficient removal of trace-level EDCs from water solution by using the coupled adsorption-advanced oxidation processes.

在这项工作中，具有高比表面积（488.4 m ²）的富氮类石墨烯碳片（N-GLCS）制备窄孔分布和高N掺杂（18.4 at％），并将其用作吸附剂和催化剂以去除双酚。吸附实验表明，N-GLCS对双酚F（BPF）（222.9 mg / g），双酚A（BPA）（317.8 mg / g）和双酚C（BPC）（540.4 mg / g）具有很高的吸附能力。结果表明，在吸附催化降解过程后的80分钟内，pH 7.0时，去除了约98.6％的BPA（70 mg / L）。N-GLCS还显示出对BPA（70 mg / L）的催化氧化降解具有极好的可重复使用性，在5个循环后，其去除率保持在83％以上。通过N-GLCS优异的吸附和催化性能的协同组合，可以将痕量的污染物预先浓缩并固定在N-GLC的表面，过氧化二硫酸盐（PS）的活化也会在N-GLCS的表面产生活性自由基，最后污染物可以被活性自由基原位降解。这些发现为使用耦合的高级吸附氧化工艺从水溶液中有效去除痕量EDC提供了新途径。