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Synthesis of Ultrathin Ordered Porous Carbon through Bergman Cyclization of Enediyne Self-Assembled Monolayers on Silica Nanoparticles

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journal contribution
posted on 18.08.2011, 00:00 by Zhiwen Li, Depeng Song, Jian Zhi, Aiguo Hu
A template approach was demonstrated to prepare ultrathin ordered porous carbon through Bergman cyclization of enediyne self-assembled monolayers on silica nanoparticles, followed by carbonization and template removal. The sizes of macropores can be finely tuned by adjusting the sizes of silica nanoparticles. The structures of the carbonous products were characterized with scanning electron microscopy, transmission electron microscopy, nitrogen adsorption–desorption isotherm, and Raman spectroscopy. The results showed that these materials consisted of interconnected ordered macropores with ultrathin walls. Large BET surface areas (up to1786 m2/g), large pore volumes (∼1.24 cm3/g), and partially graphitized frameworks were revealed for these materials. Depending on these excellent properties, potential applications would be expected.