Hierarchically porous materials containing interconnected macro-/meso-/micropores are promising candidates for energy storage, catalysis, and gas separation. Here, we present an effective approach for synthesizing three-dimensional (3D) sulfonated graphene coupled microporous organic polymers (SG–MOPs). The resulting SG–MOPs possess uniform macropores with an average size of ca. 350 nm, abundant mesopores, and micropores with an average size of ca. 0.6 nm. The SG-supported adsorbents exhibit a high nitrogen content (more than 38.1 wt %), high adsorption capacity (up to 3.37 mmol CO₂ g^–1), high CO₂/N₂ selectivity from 42 to 51, moderate heat of adsorption, as well as good stability because of the hierarchical porous structure and excellent thermal conductivity of the SG scaffold. Thus, these nitrogen-enriched adsorbents allow the overall CO₂ capture process to be promising and sustainable.

中文翻译：

---

分层结构的石墨烯偶联微孔有机聚合物，可实现出色的CO ₂捕集率

包含相互连接的大孔/中孔/微孔的多孔结构材料有望成为能量存储，催化和气体分离的候选材料。在这里，我们提出了一种合成三维（3D）磺化石墨烯偶联微孔有机聚合物（SG-MOPs）的有效方法。产生的SG-MOPs具有均匀的大孔，平均大小约为。350 nm，丰富的中孔和微孔，平均大小约为 0.6纳米 SG负载的吸附剂显示出高的氮含量（大于38.1 wt％），高的吸附容量（高达3.37 mmol CO ₂ g ^–1），高的CO ₂ / N ₂SG支架具有42到51的选择性，适中的吸附热以及稳定的稳定性，这归因于SG支架的分级多孔结构和出色的导热性。因此，这些富氮吸附剂使整个CO ₂捕集过程前景广阔且可持续。