Abstract:

Ordered mesoporous carbons were synthesized through evaporation induced self-assembly using phenol formaldehyde（PF）resin as carbon resource and triblock copolymer F127 as template. The molecular weight of PF resin synthesized at different temperatures was measured by gel permeation chromatography（GPC）and the resultant mesoporous carbon was characterized by X-ray diffraction（XRD），transmission electron microscopy（TEM）and N₂ adsorption/desorption. The temperature in PF resin synthesis showed obvious influence on the pore size and orderliness of mesoporous carbon. With the increase in temperature of PF resin synthesis ranging from 75 to 95 ℃，the orderliness of mesopores increased at first and then declined. With the PF resin synthesized at 85 ℃，the resultant mesoporous carbon showed a well-ordered hexagonal meso-structure with a mesopore volume of 0.115 cm³/g，a BJH specific surface area of 127 m²/g and an average pore size of 3.41 nm.

摘要：

以酚醛树脂为碳前体，三嵌段聚合物F127作为模板剂，采用溶剂挥发自组装法制备了有序介孔碳材料。采用凝胶渗透色谱测定了不同合成温度酚醛树脂的分子量；使用X射线衍射、透射电镜和N₂吸／脱附等手段对有序介孔碳进行了表征。研究了合成酚醛树脂的温度对介孔碳孔径分布及有序性的影响。结果表明，随着合成酚醛树脂的温度从75 ℃升到95 ℃，介孔碳的有序性先增后减：酚醛树脂的合成温度为85 ℃时，所得介孔碳有较好的有序性，介孔孔容和比表面积分别为0.115 cm³/g和127 m²/g，平均孔径为3.41 nm。