Synthesis and structure of carbon belts made of carbon nanofibers supported on carbon foams |
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| Affiliation: | 1. Nuclear Materials Research Division, Korea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseong-gu, Daejeon, 34057, Republic of Korea;2. Department of Advanced Materials Science and Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, 16419, Republic of Korea;1. Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, People’s Republic of China;2. CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, Liaoning, People’s Republic of China;3. State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSMRI), Qingdao, 266237, People’s Republic of China;4. Laboratory for Microstructures, Institute of Materials, School of Materials Science and Engineering, Shanghai University, Shanghai, 200072, People’s Republic of China;5. School of Materials Science and Engineering, Southwest Petroleum University, Chengdu, 610500, People’s Republic of China |
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| Abstract: | Two-dimensional carbon belts (CBs) made of carbon nanofibers (CNFs) supported on a carbon foam (CFoam) substrate have been synthesized by a procedure involving carbonization of polyamic acid (PAA)/Ni(NO3)2 solution impregnated polyurethane foam in flowing H2 at 700 °C and catalytic chemical vapor deposition (CCVD) using C2H4 as a carbon source and SO2 as a promoter. The CBs, which are hundreds of micrometers in length, several micrometers in width and tens of nanometers in thickness, are made of CNFs with a low degree of graphitization that array with an orientation roughly parallel to the longitudinal axis of the CBs. The results show that the mass ratio of Ni to PAA, a H2 atmosphere in carbonization and SO2 in CCVD process are the three key factors governing the growth of the CBs. |
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