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One-pot synthesis of nitrogen-rich aminal- and triazine-based hierarchical porous organic polymers with highly efficient iodine adsorption
Polymer ( IF 4.6 ) Pub Date : 2020-03-26 , DOI: 10.1016/j.polymer.2020.122401
Cheng Liu , Miao Xia , Manxia Zhang , Kuanyu Yuan , Fangyuan Hu , Guipeng Yu , Xigao Jian

Design and preparation of porous adsorption materials for dealing with environmental issues is attractive and promising, but it remains some challenges such as effective capture of radioactive iodine. Here, two nitrogen-rich porous organic polymers named PAN-B and PAN-T containing triazine and aminal linkages were synthesized through the polycondensation of the triazine-based hexamine (TDATPA) and two aldehyde monomers (benzaldehyde and 2-thenaldehyde) by polycondensation reaction. Fourier transform infrared (FT-IR) and 13C cross polarization/magic angle spinning nuclear magnetic resonance (13C CP/MAS NMR) measurements were performed to characterize their structures. The nitrogen-rich polymers (PAN-B and PAB-T) have hierarchical porous structures, with high Brunauer−Emmett−Teller specific surfaces (SBET) of 1254 m2/g and 1273 m2/g, respectively. And their micropore volume were satisfactory (0.275 cm3/g and 0.279 cm3/g). Moreover, PAN-B and PAN-T behaved very high iodine adsorption efficiency of 237 wt% and 243 wt% in 20 min, respectively, and had high iodine adsorption capacity of above 311 wt%.



中文翻译:

一锅合成富氮的基于氨基和三嗪的分级多孔有机聚合物,具有高效的碘吸附能力

设计和制备用于处理环境问题的多孔吸附材料是有吸引力且很有前途的,但是仍然存在一些挑战,例如如何有效捕获放射性碘。在此,通过三嗪基六胺(TDATPA)和两种醛单体(苯甲醛和2-乙醛)的缩聚反应,合成了两种含有三嗪和氨基键的富含氮的多孔有机聚合物PAN-B和PAN-T。 。傅里叶变换红外(FT-IR)和13 C交叉极化/魔角旋转核磁共振(13进行CCP / MAS NMR)测量以表征其结构。富氮聚合物(PAN-B和PAB-T)具有分层的多孔结构,其Brunauer-Emmett-Teller高比表面积(S BET)分别为1254 m 2 / g和1273 m 2 / g。并且它们的微孔体积令人满意(0.275cm 3 / g和0.279cm 3 / g)。而且,PAN-B和PAN-T在20分钟内表现出非常高的碘吸附效率,分别为237wt%和243wt%,并且具有高于311wt%的高碘吸附能力。

更新日期:2020-03-27
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