Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 18, Issue 21, Pages 2426-2436Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b718673h
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This paper describes the synthesis of carbon nanofibers (CNFs) on solid carbon foam (Hairy Foam) by catalytic decomposition of ethylene. The effect of nickel loading on fiber diameter and morphology, CNF coverage, and fiber layer thickness is studied using SEM and N-2/Kr-physisorption. The surface area increased from 0.12 m(support)(2) g(-1) (support) for reticulated vitreous carbon (RVC) to 146 rn(2) (support) g(support)(-1) for Hairy Foam. A nickel concentration of 0.5 g(Ni) g(-1) (Rvc) results in fibers with a diameter of 30 to 90 nm. Increasing the nickel concentration results in fiber diameters of 30 to 1100 nm. Complete CNF coverage is obtained for a nickel deposition time >= 240 min and a nickel concentration >= 2.5 gNi g(RVC)(-1).
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