Two types of carbon nanocomposites: Graphite encapsulated iron nanoparticles and thin carbon nanotubes supported on thick carbon nanotubes, synthesized using PECVD

Journal Article · Wed Apr 15 00:00:00 EDT 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.01.036· OSTI ID:21370364

Guangmin, Yang; Xin, Wang; Qiang, Xu; Shumin, Wang; Hongwei, Tian ^[1]

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1. Department of Materials Science, State Key Laboratory of Superhard Materials, and Key Laboratory of Automobile Materials of MOE, Jilin University, Changchun 130012 (China)

In this work, graphite encapsulated Fe nanoparticles and thin carbon nanotubes (CNTs) supported on the pristine CNTs, respectively, were synthesized using plasma enhanced chemical vapor deposition via efficiently controlling the flow rate of discharging CH{sub 4} and H{sub 2} gas. The properties of the obtained hybrid materials were characterized with superconducting quantum interference and field emission measurements. The results showed that the encapsulated Fe nanoparticles had diameters ranging from 1 to 30 nm, and this hybrid nanocomposite exhibited a ferromagnetic behavior at room temperature. Thin CNTs with an average diameter of 6 nm were attached to the surface of the prepared CNTs, which exhibited a lower turn-on field and higher emission current density than the pristine CNTs. The Fe nanoparticles either encapsulated with graphite or used as catalyst for thin CNTs growth were all originated from the pyrolysis of ferrocene. - Graphical abstract: Graphite encapsulated Fe nanoparticles and thin carbon nanotubes supported on the pristine carbon nanotubes, respectively, were synthesized using plasma enhanced chemical vapor deposition.

• OSTI ID: 21370364
• Journal Information: Journal of Solid State Chemistry, Vol. 182, Issue 4; Other Information: DOI: 10.1016/j.jssc.2009.01.036; PII: S0022-4596(09)00033-4; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CHEMICAL VAPOR DEPOSITION
COMPOSITE MATERIALS
ENCAPSULATION
FERROCENE
GRAPHITE
IRON
NANOTUBES
PYROLYSIS
TEMPERATURE RANGE 0273-0400 K
CARBON
CHEMICAL COATING
CHEMICAL REACTIONS
COMPLEXES
DECOMPOSITION
DEPOSITION
DIENES
ELEMENTS
HYDROCARBONS
IRON COMPLEXES
MATERIALS
METALS
MINERALS
NANOSTRUCTURES
NONMETALS
ORGANIC COMPOUNDS
POLYENES
SURFACE COATING
TEMPERATURE RANGE
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS