![]() ![]() 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. Nanotechnology is a broad scientific field but one of the most explored materials in nanotechnology is carbon nanotube (CNT). 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. Such a strategy is very simple and versatile for synthesis of various mesoporous carbon-based core–shell structures. The carbon nanotubes geometric structures and their characteristic properties are very important concepts studied in any introductory class to nanotechnology. 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. Single-walled carbon nanotubes theoretically possess ultimate intrinsic tensile strengths in the 100200 GPa range, among the highest in existing materials. 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. Core–shell structured mesoporous materials have received great interest for various applications. Scientists at Pacific Northwest National Lab have developed a technique that is able to pull carbon dioxide out of the exhaust flue of a power plant or factory for 39 per metric ton, the cheapest. ![]()
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