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Simple synthesis of mesoporous carbon with magnetic nanoparticles embedded in carbon rods |
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| Authors: | Jinwoo Lee Yosun Hwang Hyun Min Park |
| Affiliation: | a National Creative Research Initiative Center for Oxide Nanocrystalline Materials, School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Republic of Korea b Department of Physics, Sungkyunkwan University, Suwon 440-746, Republic of Korea c New Material Evaluation Center, Korea Research Institute of Standards and Science, Taejon 305-600, Republic of Korea |
| Abstract: | Magnetically separable ordered mesoporous carbon containing magnetic nanoparticles embedded in the carbon walls was synthesized using a simple synthetic procedure. The resulting magnetically separable mesoporous carbon was denoted as M-OMC (magnetically separable ordered mesoporous carbon) poly(pyrrole) with residual Fe2+ ions in the mesoporous channel was converted to carbon material containing superparamagnetic nanoparticles. The size of the magnetic nanoparticles obtained was restricted by the channel size of the SBA-15 silica template, which resulted in the generation of superparamagnetic nanoparticles embedded in the carbon rods. The blocking temperature of M-OMC is 110 K. Pore size and textural property of M-OMC is similar to that of hexagonally ordered mesoporous carbon fabricated using SBA-15 silica as a template. The saturation magnetization of M-OMC is ca. 30.0 emu/g at 300 K, high enough for magnetic separation. |
| Keywords: | Porous carbon Carbonization BET surface area Magnetic properties, Particle size |
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