Affording the ultrahigh structural properties and rich surface groups in traditional activated carbon (AC) together to enable the efficient control of polar volatile organic chemicals (VOCs) is significant but challenged. Herein, we report the skilled construction of super activated carbon (AC) adsorbent (S_BET = 4402 m² g⁻¹) via N-doping tactic to trigger the deep surface digging effect for banana peel-derived AC (S_BET = 3897 m² g⁻¹) and remarkably reinforced the multilayer adsorption behavior by the post-implanted surface N species. Impressively, the resultant optimized adsorbent UC-5 shows nearly 1.83 folds enhancement of polar VOCs(volatile organic chemicals) that acetone adsorption capacity (44.89 mmol g⁻¹) under 30 kPa of acetone partial pressure compared to the original AC (24.57 mmol g⁻¹), which is known as the record acetone adsorption capacity. Besides, the boosting adsorption effect was well inherited and enlarged under a higher saturated vapor pressure of acetone in the static adsorption process, which was further evidenced by dynamic adsorption breakthrough experiments. The intensive studies revealed that the surface digging of the used urea dopant not only contributed to the enriching of surface N and improved the structural properties and thermal stability (575 °C) but also reserved more oxygen content of original AC compared to the resulted counterparts using melamine, which were together responsible for the drastic increase of acetone adsorption. This work provides the new possibility for the adsorption of polar VOCs gas via exploiting the outstanding structural properties and surface N interaction.

将传统活性炭 (AC) 中的超高结构特性和丰富的表面基团结合在一起，以实现对极性挥发性有机化学品 (VOC) 的有效控制具有重要意义但也面临挑战。在此，我们报告了通过N 掺杂策略熟练构建超级活性炭 (AC) 吸附剂 (S _BET  = 4402 m ² g ^-1 )以触​​发香蕉皮衍生活性炭(S _BET  = 3897 m ²克^-1) 并显着增强了后植入表面 N 物质的多层吸附行为。令人印象深刻的是，与原始 AC (24.57 mmol g ^-)相比，所得优化的吸附剂 UC-5在 30 kPa 丙酮分压下对极性 VOC（挥发性有机化学品）的吸附容量（44.89 mmol g ^-1）提高了近 1.83 倍^{。 1})，这被称为丙酮吸附容量的记录。此外，在静态吸附过程中，在较高的丙酮饱和蒸气压下，促进吸附作用得到很好的继承和扩大，动态吸附突破实验进一步证明了这一点。深入研究表明，所用尿素掺杂剂的表面挖掘不仅有助于富集表面 N，改善结构性能和热稳定性（575°C），而且与使用得到的对应物相比，保留了更多的原始 AC 的氧含量。三聚氰胺，它们共同导致丙酮吸附的急剧增加。这项工作通过利用优异的结构特性和表面 N 相互作用为吸附极性 VOCs 气体提供了新的可能性。