以一种新碳前驱体制备有序介孔碳及其表征  

Synthesis and Characterization of Ordered Mesoporous Carbon Using a Novel Carbon Precursor

作　　者：刘攀博[1] 焦剑[1] 黄英[1] 吴广力[1] 刘蓬[1] 

机构地区：[1]西北工业大学理学院应用化学系,西安710129

出　　处：《材料导报》2012年第14期8-12,共5页Materials Reports

基　　金：西北工业大学研究生创业种子基金(Z2011013)

摘　　要：分别采用两亲性三嵌段共聚物F127、P123以及F127/P123复合物为模板剂,线性酚醛树脂/六亚甲基四胺固化物为碳源,利用有机-有机自组装法制备了具有二维六方结构和蠕虫状结构的介孔碳材料。采用FT-IR、XRD、TEM、低温N2吸附/脱附、TG和元素分析等方法表征了介孔碳的结构,研究了不同的模板剂对介孔碳结构的影响。结果表明,以F127为模板剂制备的介孔碳具有规则的二维六方结构,其比表面积、微孔表面积、孔容、孔径和孔壁厚度分别为670m2/g、368m2/g、0.40cm3/g、3.2nm和4.5nm。以P123为模板剂制备的介孔碳具有蠕虫状结构,其比表面积、微孔表面积、孔容和孔径分别为506m2/g、251m2/g、0.27cm3/g和3.0nm。以F127/P123复合物为模板剂制备的介孔碳的孔径相对于单一模板剂有所提高,其比表面积、微孔表面积、孔容和孔壁厚度均随着复合模板剂中F127质量分数的降低而降低。Mesoporous carbon framework with two-dimensional hexagonal structure and worm-liKe structure were synthesized through organic-organic self-assembly method, by using triblock copolymer F127, P123 and F127/ P123 as template and linear phenolic resin as carbon precursor. The structure of ordered mesoporous carbon was cha racterized by FT-IR, X-ray diffraction, transmission electron microscopy, N2 adsorption/desorption, thermogravime- tric analysis and elemental analyse measurements. The effect of different templates on the structure of mesoporous carbon were investigated. The results showed that mesoporous carbon with two-dimensional hexagonal structure could be synthesized by using F127 as template, and the specific surface areas, the micropore surface areas, the pore volumes, the pore size and the pore wall thickness were 670m2/g, 368mz/g, 0. 40cma/g, 3.2nm and 4. 5nm, respectively. The mesoporous carbon with worm-like structure could he synthesized by using P123 as template, and the specific surface areas, the micropore surface areas, the pore volumes and the pore size were 506m2/g, 251m2/g, 0.27cma/g and 3.0nm. The pore size of mesoporous carbons prepared from F127/P123 were larger than that of mesoporous carbon prepared from single template, and the specific surface areas, the micropore surface areas, the pore sizes, the pore volumes and the pore wall thicknesses reduced with the mass fraction of F127 decreasing.

关 键 词：三嵌段共聚物 线性酚醛树脂 有机-有机自组装 介孔碳 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]