Nitrogen-rich microporous carbon nanosheets, which feature microporous structure and nitrogen atoms in the graphene like carbon nanosheets, have shown promising applications in a variety of application fields. Here, nitrogen-rich microporous carbon (C₂N) nanosheets were synthesized by a facile molten salt assisted pyrolysis method. Structural characterization and synthesis processes were investigated to elucidate the critical role of molten salt for the synthesis of C₂N nanosheets. It is found that the morphology of the product depends on the concentration of the reaction monomer in molten salt. By controlling the concentration of the reactants in the molten salt, well defined C₂N nanosheets with high nitrogen content (23.50 wt%), ultrathin thickness (2.07 nm) and high surface area (355.62 m²/g) can be achieved. The nitrogen-rich microporous C₂N nanosheets exhibits superior CO₂ sorption capability (1.82 mmol/g at 298 K and 1 bar) and a relatively high CO₂ selectivity toward N₂, which enable this material to be attractive adsorbent for CO₂ sorption.

像碳纳米片一样，富含氮的微孔碳纳米片具有石墨烯中的微孔结构和氮原子，已显示出广阔的应用前景。在这里，富氮微孔碳（C ₂ N）纳米片是通过一种简便的熔融盐辅助热解法合成的。研究了结构表征和合成过程，以阐明熔融盐在合成C ₂ N纳米片中的关键作用。发现产物的形态取决于熔融盐中反应单体的浓度。通过控制熔融盐中反应物的浓度，可以很好地确定C ₂可以获得具有高氮含量（23.50重量％），超薄厚度（2.07nm）和高表面积（355.62m ² / g）的N纳米片。富氮微孔C ₂ N纳米片具有出色的CO ₂吸附能力（在298 K和1 bar下为1.82 mmol / g）和相对较高的CO ₂对N ₂选择性，这使该材料成为有吸引力的CO ₂吸附吸附剂。。