“Hairy Foam”: carbon nanofibers grown on solid carbon foam. A fully accessible, high surface area, graphitic catalyst support
“Hairy Foam”: carbon nanofibers grown on solid carbon foam. A fully accessible, high surface area, graphitic catalyst support
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DOI：
10.1039/b718673h
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发表时间：
2008-05
影响因子：
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通讯作者：
Pwam Patrick Wenmakers;J. Schaaf;B. Kuster;J. J. Schouten-J.
中科院分区：
文献类型：
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作者：
Pwam Patrick Wenmakers;J. Schaaf;B. Kuster;J. J. Schouten-J.
本文描述了通过乙烯催化分解在固体碳泡沫（“毛状泡沫”）上合成碳纳米纤维（CNFs）。镍负载对纤维直径和形态，CNF覆盖率，和纤维层厚度的影响进行了研究，使用SEM和N2/Kr-physosorption。表面积从网状玻璃碳（RVC）的0.12 m2载体g-1载体增加到“毛状泡沫”的146 m2载体g-1载体。0.5 gNig− 1 RVC的镍浓度导致直径为30至90 nm的纤维。增加镍浓度导致纤维直径为30至1100 nm。对于镍沉积时间≥240 min和镍浓度≥2.5 gNig− 1 RVC，获得完全CNF覆盖。
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 N2/Kr-physisorption. The surface area increased from 0.12 m2support g−1support for reticulated vitreous carbon (RVC) to 146 m2support g−1support for “Hairy Foam”. A nickel concentration of 0.5 gNig−1RVC 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 gNig−1RVC.