| 초록 |
The diverse applicability of the nanometer-sized carbon materials has motivated the development of various methods to fabricate the tailored carbon nanostructures such as nanotubes, hollow capsules, and mesoporous forms. In particular, the mesoporous carbons provide controlled pore size and high surface area, which can be applied for nanoreactors, catalysts, adsorbents, optical devices, and electrochemical supercapacitors. On the other hand, the hollow carbons are also useful for the purpose of drug delivery, sensors, protection of proteins and enzymes, and storage materials. Herein, we report the selective fabrication of the fine carbon nanocapsules with a particle diameter of ca. 30 nm and mesocellular foam (MCF) carbons with a uniform pore of ca. 22 nm in diameter by colloidal silica templating. In order to tailor the carbon nanostructure between hollow nanocapsule and MCF, we introduced surface modification and microemulsion polymerization on colloidal silica templating. The main advantage of our synthetic strategy can be explained by the fact that the facile control of the synthetic conditions in the microemulsion polymerization process makes it possible to fabricate two kinds of carbon materials with the quite different nanostructures selectively, i.e. MCF carbon and carbon nanocapsule. |
