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Pore Structure Characterization of Poly(vinylidene chloride)-Derived Nanoporous Carbons
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  • Journal title : Carbon letters
  • Volume 13, Issue 4,  2012, pp.236-242
  • Publisher : Korean Carbon Society
  • DOI : 10.5714/CL.2012.13.4.236
 Title & Authors
Pore Structure Characterization of Poly(vinylidene chloride)-Derived Nanoporous Carbons
Jung, Hwan Jung; Kim, Yong-Jung; Lee, Dae Ho; Han, Jong Hun; Yang, Kap Seung; Yang, Cheol-Min;
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Poly(vinylidene chloride) (PVDC)-derived nanoporous carbons were prepared by various activation methods: heat-treatment under an inert atmosphere, steam activation, and potassium hydroxide (KOH) activation at 873, 1073, and 1273 K. The pore structures of PVDC-derived nanoporous carbons were characterized by the adsorption technique at 77 K. Heat treatment in an inert atmosphere increased the specific surface area and micropore volume with elevating temperature, while the average micropore width near 0.65 nm was not significantly changed, reflecting the characteristic pore structure of ultramicroporous carbon. Steam activation for PVDC at 873 and 1073 K also yielded ultramicroporosity. On the other hand, the steam activated sample at 1273 K had a wider average micropore width of 1.48 nm, correlating with a supermicropore. The KOH activation increased the micropore volume with elevating temperature, which is accompanied by enlargement of the average micropore width from 0.67 to 1.12 nm. The average pore widths of KOH-activated samples were strongly governed by the activation temperature. We expect that these approaches can be utilized to simply control the porosity of PVDC-derived nanoporous carbons.
nanoporous carbon;activation;pore structure;adsorption;
 Cited by
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