Carbon nanowalls grown by microwave plasma enhanced chemical vapor deposition during the carbonization of polyacrylonitrile fibers
- School of Engineering and Applied Science, Aston University, Birmingham B4 7ET (United Kingdom)
- Department of Metallurgy and Materials, University of Birmingham, Birmingham B15 2TT (United Kingdom)
- Department of Mechanical Engineering, ETH Zurich, Zurich 8092 (Switzerland)
- School of Life and Health Science, Aston University, Birmingham B4 7ET (United Kingdom)
- Thermo Fisher Scientific, Stafford House, Hemel Hempstead HP2 7GE (United Kingdom)
We used microwave plasma enhanced chemical vapor deposition (MPECVD) to carbonize an electrospun polyacrylonitrile (PAN) precursor to form carbon fibers. Scanning electron microscopy, Raman spectroscopy, and Fourier transform infrared spectroscopy were used to characterize the fibers at different evolution stages. It was found that MPECVD-carbonized PAN fibers do not exhibit any significant change in the fiber diameter, whilst conventionally carbonized PAN fibers show a 33% reduction in the fiber diameter. An additional coating of carbon nanowalls (CNWs) was formed on the surface of the carbonized PAN fibers during the MPECVD process without the assistance of any metallic catalysts. The result presented here may have a potential to develop a novel, economical, and straightforward approach towards the mass production of carbon fibrous materials containing CNWs.
- OSTI ID:
- 22102213
- Journal Information:
- Journal of Applied Physics, Vol. 113, Issue 2; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON FIBERS
CARBON NANOTUBES
CARBONIZATION
CATALYSIS
CATALYSTS
CHEMICAL VAPOR DEPOSITION
FOURIER TRANSFORM SPECTROMETERS
INFRARED SPECTRA
MASS
MICROWAVE RADIATION
NANOSTRUCTURES
ORGANIC POLYMERS
PLASMA
RAMAN SPECTRA
RAMAN SPECTROSCOPY
SCANNING ELECTRON MICROSCOPY
SURFACES