利用纖維素框架合成摻氮多孔碳及其於二氧化碳吸附之應用

Abstract

我們成功使用間苯二酚-甲醛-三氨基嘧啶（RF-TPF）作為碳源，三維大孔模板（纖維素濾紙）作為結構構建模板以及產孔媒介，輔以氫氧化鉀活化處理以產生微孔，最終製得三維多孔碳（以HPC代表）。HPC樣品表現出極高的比表面積（2535 m2g-1），並且在纖維素框架的大孔之外，另有以微孔和中孔為主的多級孔。樣品的最高二氧化碳吸收量在273K達到6.0 mmol·g−1，而在298K下則是3.7 mmol·g−1。二氧化碳吸附結果表明，以此法製得的HPC可以期待作為良好的材料廣泛應用在這一領域。

We have developed a novel and general strategy for the construction of 3D hierarchically porous carbon (denoted as HPC) by using resorcinol-formaldehyde-triaminopyrimidine (RF-TPF) as carbon source and a 3D macroporous template (cellulose filter paper) as both structure directing and pore generating agent along with the assistance of KOH activation for creating micropores. The HPC sample shows a super-high specific surface area of 2535 m2g-1 with hierarchical pores of majorly micropores and mesopores in addition to macropores via the cellulose framework templating as well as fantastic CO2 uptake of 6.0 mmol·g−1 at 273K and 3.7 mmol·g−1 at 298K. Our CO2 adsorption results show capability of being a candidate for a range of future applications.