Microstructure of polyacrylonitrile-based activated carbon fibers prepared from solvent-free coagulation process
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Universidad Nacional Autónoma de México
2016
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| _version_ | 1876472944452960256 |
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| author | Norhaniza Yusof |
| author_facet | Norhaniza Yusof |
| contents | Microstructure of polyacrylonitrile-based activated carbon fibers prepared from solvent-free coagulation process Norhaniza Yusof Dipak Rana Ahmad Fauzi Ismail Takeshi Matsuura Ingeniería Solvent Microstructure Physical activation Activated carbon fibers free coagulation process Polyacrylonitrile precursor fibers prepared using a solvent-free coagulation process were stabilized, carbonized, and physically activated by carbon dioxide into activated carbon fibers (ACFs). The activation temperature varied from 600 to 900 ◦ C while the activation time was 1 h. Atomic force microscopy was used to observe the surface morphology, as well as the surface roughness of the ACFs. Higher pyrolysis temperature formed rougher surfaces, and increased the pore sizes. Meanwhile, Fourier transform infrared spectroscopy revealed more conversion of oxygen containing functional groups to carbonaceous materials as the activation temperature increased. Moreover, the microstructure properties were thoroughly characterized by the X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) studies. XRD analysis showed that the activation of the ACFs shrank the ordered structure, reducing the D-spacing from 0.358 to 0.347 nm for the fibers prepared at activation temperatures of 600 to 900 ◦ C. Meanwhile, XPS analysis concluded that that the oxygen containing functional groups were still retained even at high activation temperatures while the nitrogen containing functional groups were reduced during the high temperature activation in the CO 2 atmosphere. 2016 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47444851004 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.1 Vol.14 |
| format | Artículo científico |
| id | redalyc_47444851004 |
| institution | Redalyc |
| language | en |
| publishDate | 2016 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Microstructure of polyacrylonitrile-based activated carbon fibers prepared from solvent-free coagulation process Norhaniza Yusof Ingeniería Solvent Microstructure Physical activation Activated carbon fibers free coagulation process Microstructure of polyacrylonitrile-based activated carbon fibers prepared from solvent-free coagulation process Norhaniza Yusof Dipak Rana Ahmad Fauzi Ismail Takeshi Matsuura Ingeniería Solvent Microstructure Physical activation Activated carbon fibers free coagulation process Polyacrylonitrile precursor fibers prepared using a solvent-free coagulation process were stabilized, carbonized, and physically activated by carbon dioxide into activated carbon fibers (ACFs). The activation temperature varied from 600 to 900 ◦ C while the activation time was 1 h. Atomic force microscopy was used to observe the surface morphology, as well as the surface roughness of the ACFs. Higher pyrolysis temperature formed rougher surfaces, and increased the pore sizes. Meanwhile, Fourier transform infrared spectroscopy revealed more conversion of oxygen containing functional groups to carbonaceous materials as the activation temperature increased. Moreover, the microstructure properties were thoroughly characterized by the X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) studies. XRD analysis showed that the activation of the ACFs shrank the ordered structure, reducing the D-spacing from 0.358 to 0.347 nm for the fibers prepared at activation temperatures of 600 to 900 ◦ C. Meanwhile, XPS analysis concluded that that the oxygen containing functional groups were still retained even at high activation temperatures while the nitrogen containing functional groups were reduced during the high temperature activation in the CO 2 atmosphere. 2016 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47444851004 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.1 Vol.14 |
| title | Microstructure of polyacrylonitrile-based activated carbon fibers prepared from solvent-free coagulation process |
| topic | Ingeniería Solvent Microstructure Physical activation Activated carbon fibers free coagulation process |
| url | https://www.redalyc.org/articulo.oa?id=47444851004 |