Chen Jinghu, Jiang Lingchang, Wang Wenting, Shen Zhangfeng, Liu Shaomin, Li Xi, Wang Yangang
College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China; College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China.
J Colloid Interface Sci. 2022 Mar;609:775-784. doi: 10.1016/j.jcis.2021.11.091. Epub 2021 Nov 20.
The increase in atmospheric carbon dioxide (CO) concentration has led to numerous problems related to our living environment, seeking an efficient carbon capture and storage (CCS) strategy associated with low energy consumption and expenditures is highly desirable. Here, we demonstrate a facile approach to synthesize a series of highly porous carbon materials derived from porous organic polymers synthesized from three low-cost isomers of triphenyl using chemical activation with KOH at different temperatures. Compared with the precursor porous organic polymers, the porosity of the prepared porous carbon materials is significantly enhanced with surface areas as high as 3367 m g and pore volumes up to 1.224 cm g. Notably, such porous carbon materials deliver an exceptionally high CO adsorption capacity of 7.78 mmol g at 273 K and 1 bar, a value that is superior to most of the previously reported adsorbents. In addition, these porous organic polymers and derived porous carbon materials exhibit high CO/N selectivity at ambient conditions. Therefore, the facile construction of highly porous carbon materials from porous organic polymers may offer an efficient strategy for CO adsorption and separation and further mitigates greenhouse effect.
大气中二氧化碳（CO₂）浓度的增加引发了诸多与我们生活环境相关的问题，因此寻求一种与低能耗和低成本相关的高效碳捕获与封存（CCS）策略非常必要。在此，我们展示了一种简便的方法，通过在不同温度下用KOH进行化学活化，从由三苯基的三种低成本异构体合成的多孔有机聚合物中合成一系列高度多孔的碳材料。与前驱体多孔有机聚合物相比，所制备的多孔碳材料的孔隙率显著提高，表面积高达3367 m²/g，孔体积达1.224 cm³/g。值得注意的是，这种多孔碳材料在273 K和1 bar下具有7.78 mmol/g的超高CO₂吸附容量，该值优于大多数先前报道的吸附剂。此外，这些多孔有机聚合物及其衍生的多孔碳材料在环境条件下表现出高的CO₂/N₂选择性。因此，由多孔有机聚合物简便构建高度多孔的碳材料可能为CO₂吸附和分离提供一种有效的策略，并进一步减轻温室效应。
