Pore structure and pore size controls of ordered mesoporous carbons prepared from resorcinol/formaldehyde/triblock polymers
Pore structure and pore size controls of ordered mesoporous carbons prepared from resorcinol/formaldehyde/triblock polymers
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DOI：
10.1016/j.micromeso.2008.08.030
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发表时间：
2009-02-01
影响因子：
5.2
通讯作者：
Ueyama, Korekazu
中科院分区：
文献类型：
--
作者：
Jin, Jin;Nishiyama, Norikazu;Ueyama, Korekazu
以间苯二酚（R）/甲醛（F）和两种三嵌段共聚物（Pluronic F127和P123）为原料，采用有机-有机自组装法合成了有序介孔炭。通过使用Pluronic F127形成具有通道状孔（COU-1）的六方介观结构。当F127/R的摩尔比从0.0027增加到0.0054时，COLI-I沸石在800 ℃下的孔径从4.7 nm略微增加到5.8 nm。当F127/R的摩尔比进一步增加到0.0081时，合成了孔径为4.8 nm的3D蠕虫状介观结构（COU-2）。用F127/P123混合三嵌段共聚物制备的碳具有与COU-1类似的有序六方介观结构。通过将P123与F127三嵌段共聚物混合，孔径扩大到6.8nm。还通过仅使用Pluronic P123合成了具有4.4nm孔径的蠕虫状介观结构（COU-2）。(C)2008年爱思唯尔公司All rights reserved.
Ordered mesoporous carbons were synthesized by an organic-organic self-assembly method using resorcinol (R)/formaldehyde (F) and two kinds of triblock copolymers (Pluronic F127 and P123). A hexagonal mesostructure with channel like pores (COU-1) was formed by using Pluronic F127. The pore sizes of COLI-I carbonized at 800 degrees C was slightly increased from 4.7 nm to 5.8 nm when the molar ratio of F127/R was increased from 0.0027 to 0.0054. When the molar ratio of F127/R was further increased to 0.0081, a 3D worm-like mesostructure (COU-2) with a pore size of 4.8 nm was synthesized. The carbons prepared with F127/P123 mixed triblock copolymers have a well-ordered hexagonal mesostructure similarly to COU-1. By mixing P123 to F127 triblock copolymer, the pore size was enlarged to 6.8 nm. The worm-like mesostructure (COU-2) with a pore size of 4.4 nm was also synthesized by using only Pluronic P123. (C) 2008 Elsevier Inc. All rights reserved.