In this paper, an exfoliated N-doped honeycomb cavernous carbon (ENC-800) with enhanced properties has been successfully synthesized by exfoliating carbonized metal-organic frameworks with high nitrogen content (N-MOFs) at liquid phase. Due to the high nitrogen content inheriting from the rich-imidazolyl organic ligand, ENC-800 shows excellent electrocatalytical activity and good performance as electrochemical detection platform. The substantial existence of graphitic N in ENC-800 provides generous C-N active site and high conductivity for catalyzing reaction. In addition, the increased specific surface area caused by exfoliation and evaporation of organic solvents confined in the N-MOFs also contributes to the electrochemical performance of ENC-800. In order to explore the potentiality of this material in electrochemical field, chloramphenicol (CAP) was detected by ENC-800 modified electrode and satisfactory results were obtained. In optimized conditions, the linear response of the ENC-800/GCE for CAP was obtained from 0.05 μM to 0.10 mM and from 0.10 mM to 3 mM with detection limit of 0.04 μM. Meanwhile, the new method to obtain an enhanced specific surface area by carbonizing solvent-contained MOFs provides a novel direction for post-processing of MOFs.

在本文中，通过在液相剥离碳化的高氮含量金属有机骨架（N-MOFs），成功合成了具有增强性能的剥离 N 掺杂蜂窝状海绵状碳（ENC-800）。由于富含咪唑基有机配体的高氮含量，ENC-800显示出优异的电催化活性和作为电化学检测平台的良好性能。ENC-800 中石墨 N 的大量存在为催化反应提供了大量的 CN 活性位点和高导电性。此外，限制在 N-MOF 中的有机溶剂的剥离和蒸发导致比表面积增加也有助于 ENC-800 的电化学性能。为了探索这种材料在电化学领域的潜力，采用ENC-800修饰电极检测氯霉素(CAP)，获得满意结果。在优化条件下，ENC-800/GCE 对 CAP 的线性响应从 0.05 μM 到 0.10 mM 和从 0.10 mM 到 3 mM，检测限为 0.04 μM。同时，通过碳化含溶剂的 MOF 来获得增强的比表面积的新方法为 MOF 的后处理提供了新的方向。