期刊
NANOTECHNOLOGY
卷 25, 期 46, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/25/46/465602
关键词
multi-layered nanofiber; coaxial electrospinning; double-tubular carbon nanofibers; tube-in-tube carbon nanofibers
资金
- Mid-career Researcher Program through an NRF grant - MEST [2013R1A2A2A01067717]
- National Research Foundation of Korea [2013R1A2A2A01067717] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This work reports the fabrication of double-tubular (or tube-in-tube) carbon nanofibers (CNFs). Tetra-layered nanofibers were manufactured using coaxial electrospinning with a concentric quadruple cylindrical nozzle system. Subsequent heat treatment eroded the first and third layers and converted the second and fourth layers into the carbonized structure, resulting in double-tubular CNFs. The morphologies and microstructures of the two tubes in the CNFs were investigated, revealing that the outer layer possessed denser and higher quality carbon crystals due to the coaxial electrospinning mechanism. Nanoparticles were readily incorporated between the two tubes in the double-tubular CNFs, providing a method for developing new multifunctional one dimensional materials.
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