This method paves a way to design functional core–shell materials with uniform mesoporous carbon shells for potential applications in adsorption, catalysis and energy fields. As a result, the nanofibers exhibit superior electrocatalytic performance toward the oxygen reduction reaction in alkaline media. The obtained nanofibers possess highly conductive CNT cores, ultrathin shell thickness (∼28 nm), perpendicular mesopores (∼6.9 nm) in the shell, high surface area (∼768 m 2 g −1), and abundant N-doping sites (6.9 at%), which distinguish them from bulk mesoporous carbons with small pore sizes. Iijima first observed a CNT in 1991.1) A. Such a strategy is very simple and versatile for synthesis of various mesoporous carbon-based core–shell structures. A carbon nanotube (CNT) has a cylindrical structure with a nanoscale diameter that is like a rolled graphene sheet. The interaction between F127 and polydopamine can be well mediated by 1,3,5-trimethyl benzene molecules, thus enabling the formation of composited micelles and ensuring the interfacial co-assembly on the CNT surface. Herein, uniform carbon N-doped carbon core–shell structured nanofibers are synthesized by a molecule-mediated interfacial co-assembly strategy. The carbon nanotubes geometric structures and their characteristic properties are very important concepts studied in any introductory class to nanotechnology. The true identity of the discoverers of carbon nanotubes is a subject of debate. Let us discuss the carbon nanotubes definition, carbon nanotube is a hollow tube made up of carbon of nanoscale diameter. However, it remains a great challenge to coat mesoporous carbon shells with large accessible pores and short tubular channels due to the difficulty in controlling the interfacial interactions during the co-assembly process. Carbon Nanotube (CNT) is single-layer graphene rolled into a tube. Core–shell structured mesoporous materials have received great interest for various applications. A recent report demonstrates real-time detection of dielectrophoretically trapped multiwalled carbon nanotubes by measuring a decrease in the gap impedance.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |