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利用离子液体为碳源,K_3[Fe(CN)_6]为催化剂成功制备了氮掺杂石墨化炭纳米囊。K_3[Fe(CN)_6]作为温和的催化剂可以使碳源石墨化并产生中空结构。产物是具有类胶囊结构的石墨化炭,其壳壁厚度和直径分别为6 nm和50 nm。Si O2纳米球的引入为产物提供了均一的介孔并提高了产物的比表面积。其比表面积从100.4提高到865.7 m~2·g~(-1)。高的比表面积为氮掺杂炭纳米囊对于CO_2吸附提供了有利的条件。
Nitrogen-doped graphitized carbon nanocapsules were successfully prepared using ionic liquid as carbon source and K_3 [Fe (CN) _6] as catalyst. K_3 [Fe (CN) _6] as a mild catalyst can graphitize the carbon source and produce a hollow structure. The product is a graphitized carbon with a capsule-like structure with a shell wall thickness and diameter of 6 nm and 50 nm, respectively. The introduction of Si O2 nanospheres provides uniform mesopores to the product and increases the specific surface area of the product. The specific surface area increased from 100.4 to 865.7 m ~ 2 · g ~ (-1). High specific surface area of nitrogen-doped carbon nanocapsules for the CO_2 adsorption provides favorable conditions.