Hyperporous Carbon from Triptycene-Based Hypercrosslinked Polymer for Iodine Capture
Hyperporous Carbon from Triptycene-Based Hypercrosslinked Polymer for Iodine Capture
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来自三蝶烯基超交联聚合物的超多孔碳用于碘捕获
DOI：
10.1002/admi.201900249
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发表时间：
2019-05-01
影响因子：
5.4
通讯作者：
Zhang, Chun
中科院分区：
文献类型：
--
作者：
Zhang, Qing-Mei;Zhai, Tian-Long;Zhang, Chun
考虑到75摄氏度的核燃料后处理条件和碘的可氧化性，热稳定性和化学稳定性对多孔材料富碘尤为重要。然而，大多数有机或金属配位的多孔材料很难满足这一长期需求。以三苯基超交联聚合物为先驱体，采用高温热解法制备了高孔炭，其比表面积为3125m(2)g(-1)，孔体积为1.60 cm(3)g(-1)，在75℃下表现出340wt%的吸碘能力，对水中碘的最大吸附容量为926 mg g(-1)。超孔碳具有制备简单、化学稳定性和热稳定性好等特点，有望成为一种理想的吸碘剂。
Considering the nuclear fuel reprocessing conditions at 75 degrees C and the oxidizability of iodine, thermal and chemical stabilities are especially important for porous materials to enrich iodine. However, most organic or metal coordinated porous materials hardly meet this long-term demand. Here, highly porous carbon is prepared from pyrolysis at high temperature using triptycene-based hypercrosslinked polymer as precursor, and possesses high Brunauer-Emmett-Teller (BET) surface area of 3125 m(2) g(-1) and pore volume of 1.60 cm(3) g(-1), and exhibits excellent iodine uptake ability of 340 wt% at 75 degrees C. Moreover, the obtained hyperporous carbon also displays remarkable capture efficiency of iodine from water with the maximum adsorption capacity of 926 mg g(-1). With the characteristics of easy preparation and good chemical and thermal stabilities, the hyperporous carbon may be an ideal adsorbent in iodine capture.