Abstract In the past few years, nitrogen-enriched microporous carbons have garnered much attention as emerging CO2 adsorbents; however, the roles of ultra-microporosity and nitrogen content have rarely been studied. The present work focuses on designing a series of microporous carbons with different concentrations of nitrogen ranging from 0 to 11 at.%. With variation of the concentration of urea and KOH, carbons with a high surface area (368–2150 m2 g−1) and high micropore volume (0.2255–1.3020 cm3 g−1) were attained. Tailoring the ultra-microporosity resulted in effective CO2 adsorption. The optimized material, CUK-112, exhibited the highest micropore volume (

中文翻译：

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从壳聚糖到尿素改性碳：定制超微孔以增强 CO2 吸附

摘要 近年来，富氮微孔碳作为新兴的CO2吸附剂备受关注；然而，很少研究超微孔率和氮含量的作用。目前的工作重点是设计一系列具有不同浓度氮的微孔碳，范围从 0 到 11 at.%。随着尿素和 KOH 浓度的变化，碳具有高表面积（368-2150 m2 g-1）和高微孔体积（0.2255-1.3020 cm3 g-1）。调整超微孔导致有效的 CO2 吸附。优化的材料 CUK-112 表现出最高的微孔体积（