Carbide-derived nanoporous carbon and novel core - Shell nanowires

Xinqi Chen, Donald R. Cantrell, Kevin Kohlhaas, Sasha Stankovich, James A. Ibers, Mietek Jaroniec, Hongsheng Gao, Xiaodong Li, Rodney S. Ruoff*

*Corresponding author for this work

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

Carbide-derived carbon (CDC) nanowires (NWs) have been synthesized by the high-temperature treatment of small-diameter β-SiC whiskers with Cl 2/H 2. A variety of physical measurements indicate that Si was extracted by exposure to Cl 2 and that the C in the carbon nanowires is primarily sp 2-bonded. From BET measurements, the specific surface area of these carbon nanowires is 1.3 × 10 3 m 2/g and they contain a network of nanopores. Nanoindentation measurements indicate that the SiC-derived C is not a stiff material, the elastic modulus being 5.0 ±1.2 GPa. High-temperature treatment of the CDC nanowires under an inert gas significantly increases the degree of graphitization. In addition, partial extraction was used to obtain core-shell structures having a thin and also very high surface area CDC shell; further treatment at high temperature was used to produce graphitized carbon shell-crystalline SiC core NWs.

Original languageEnglish (US)
Pages (from-to)753-758
Number of pages6
JournalChemistry of Materials
Volume18
Issue number3
DOIs
StatePublished - Feb 7 2006

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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    Chen, X., Cantrell, D. R., Kohlhaas, K., Stankovich, S., Ibers, J. A., Jaroniec, M., Gao, H., Li, X., & Ruoff, R. S. (2006). Carbide-derived nanoporous carbon and novel core - Shell nanowires. Chemistry of Materials, 18(3), 753-758. https://doi.org/10.1021/cm051991o