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

doi:10.1021/cm051991o

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 journal › Article › peer-review

25 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 language	English (US)
Pages (from-to)	753-758
Number of pages	6
Journal	Chemistry of Materials
Volume	18
Issue number	3
DOIs	https://doi.org/10.1021/cm051991o
State	Published - Feb 7 2006

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Materials Chemistry

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10.1021/cm051991o

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@article{5d8137503ba1496aafdbf83388a82a52,

title = "Carbide-derived nanoporous carbon and novel core - Shell nanowires",

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.",

author = "Xinqi Chen and Cantrell, {Donald R.} and Kevin Kohlhaas and Sasha Stankovich and Ibers, {James A.} and Mietek Jaroniec and Hongsheng Gao and Xiaodong Li and Ruoff, {Rodney S.}",

year = "2006",

month = feb,

day = "7",

doi = "10.1021/cm051991o",

language = "English (US)",

volume = "18",

pages = "753--758",

journal = "Chemistry of Materials",

issn = "0897-4756",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Carbide-derived nanoporous carbon and novel core - Shell nanowires

AU - Chen, Xinqi

AU - Cantrell, Donald R.

AU - Kohlhaas, Kevin

AU - Stankovich, Sasha

AU - Ibers, James A.

AU - Jaroniec, Mietek

AU - Gao, Hongsheng

AU - Li, Xiaodong

AU - Ruoff, Rodney S.

PY - 2006/2/7

Y1 - 2006/2/7

N2 - 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.

AB - 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.

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U2 - 10.1021/cm051991o

DO - 10.1021/cm051991o

M3 - Article

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SN - 0897-4756

VL - 18

SP - 753

EP - 758

JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 3

ER -

Carbide-derived nanoporous carbon and novel core - Shell nanowires

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