Functional Monolithic Polymeric Organic Framework Aerogel as Reducing and Hosting Media for Ag nanoparticles and Application in Capturing of Iodine Vapors
Functional Monolithic Polymeric Organic Framework Aerogel as Reducing and Hosting Media for Ag nanoparticles and Application in Capturing of Iodine Vapors
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DOI：
10.1021/cm300696g
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发表时间：
2012-05-22
影响因子：
8.6
通讯作者：
Kanatzidis, Mercouri G.
中科院分区：
文献类型：
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作者：
Katsoulidis, Alexandros P.;He, Jiaqing;Kanatzidis, Mercouri G.
以苯甲醛和1，5-二羟基萘为原料，采用溶剂热聚合法合成了具有高密度羟基官能团的高分子有机骨架整体气凝胶（Mon-POF）。该POF材料具有1230 m2/g的高表面积，具有微孔、中孔、大孔，和0.15 g cm-3的低堆积密度。多孔性能的演变受聚合速率的控制。Mon-POP在酸性和碱性条件下稳定。大量OH官能团的存在为整料提供了离子交换性能以及还原性能。Mon-POF从水溶液中吸附Ag+以存款Ag纳米颗粒进入孔中，以类似于复合材料的25wt%的高负载含量。负载Ag的整料捕获大量的I-2蒸气并将其有效地固定为β-AgI的形式。
Monolithic aerogels of polymeric organic framework (Mon-POF) with a high density of OH functional groups were synthesized through solvothermal polymerization of terephthalaldehyde and 1,5-dihydroxynaphthalene. This POF material presents high surface area of 1230 m(2) g(-1) having micro-, meso-, macropores, and low bulk density of 0.15 g cm(-3). The evolution of the porous properties is controlled with the polymerization rate. Mon-POP is stable under acidic and basic conditions. The presence of high number of OH functional groups provides the monolith with ion-exchange properties as well as reducing properties. The Mon-POF adsorbs Ag+ from aqueous solution to deposit Ag nanoparticles into the pores at a high loading content similar to 25 wt % of the composite material. The Ag loaded monolith captures significant amount of I-2 vapor and fixes it effectively in the form of beta-AgI.