Electron microscopy and electron energy loss spectroscopy studies of carbon fiber formation at Fe catalysts

V. D. Blank; B. A. Kulnitskiy; D. V. Batov; U. Bangert; A. Gutiérrez-Sosa; A. J. Harvey

doi:10.1063/1.1425079

Electron microscopy and electron energy loss spectroscopy studies of carbon fiber formation at Fe catalysts

V. D. Blank, B. A. Kulnitskiy, D. V. Batov, U. Bangert, A. Gutiérrez-Sosa, A. J. Harvey

Research output: Contribution to journal › Article › peer-review

Abstract

Nanofibers were produced by the chemical vapor deposition method in the presence of Fe-catalyst particles at temperatures of 700-850 K by disproportionation of CO. Electron diffraction and high resolution electron imaging as well as electron energy loss spectroscopy and x-ray analysis techniques were used to study the nanofiber formation in different places at the catalyst surface. The particles enclosed by the fibers were found to be Fe ₇C ₃ and Fe ₃C. Crystallographic relationships between deposit and particle were established. The structural properties of the deposit were found to be dependent on the position at the particle surface. Graphitic growth was favored at certain facets. At the particle tip graphene sheet formation competed with Fe ₂O ₃ oxide formation. We also report the occurrence of a low loss feature between 3 and 4 eV, concurrent with the dispersion of an interface plasmon at the graphite/Fe ₂O ₃ interface.

Original language	English
Pages (from-to)	1657-1660
Number of pages	4
Journal	Journal of Applied Physics
Volume	91
Issue number	3
DOIs	https://doi.org/10.1063/1.1425079
Publication status	Published - 1 Feb 2002
Externally published	Yes

Access to Document

10.1063/1.1425079

Cite this

@article{2a29a8207e4c4af1a857dd6fb79c39f4,

title = "Electron microscopy and electron energy loss spectroscopy studies of carbon fiber formation at Fe catalysts",

abstract = "Nanofibers were produced by the chemical vapor deposition method in the presence of Fe-catalyst particles at temperatures of 700-850 K by disproportionation of CO. Electron diffraction and high resolution electron imaging as well as electron energy loss spectroscopy and x-ray analysis techniques were used to study the nanofiber formation in different places at the catalyst surface. The particles enclosed by the fibers were found to be Fe 7C 3 and Fe 3C. Crystallographic relationships between deposit and particle were established. The structural properties of the deposit were found to be dependent on the position at the particle surface. Graphitic growth was favored at certain facets. At the particle tip graphene sheet formation competed with Fe 2O 3 oxide formation. We also report the occurrence of a low loss feature between 3 and 4 eV, concurrent with the dispersion of an interface plasmon at the graphite/Fe 2O 3 interface.",

author = "Blank, {V. D.} and Kulnitskiy, {B. A.} and Batov, {D. V.} and U. Bangert and A. Guti{\'e}rrez-Sosa and Harvey, {A. J.}",

year = "2002",

month = feb,

day = "1",

doi = "10.1063/1.1425079",

language = "English",

volume = "91",

pages = "1657--1660",

journal = "Journal of Applied Physics",

issn = "0021-8979",

number = "3",

}

TY - JOUR

T1 - Electron microscopy and electron energy loss spectroscopy studies of carbon fiber formation at Fe catalysts

AU - Blank, V. D.

AU - Kulnitskiy, B. A.

AU - Batov, D. V.

AU - Bangert, U.

AU - Gutiérrez-Sosa, A.

AU - Harvey, A. J.

PY - 2002/2/1

Y1 - 2002/2/1

N2 - Nanofibers were produced by the chemical vapor deposition method in the presence of Fe-catalyst particles at temperatures of 700-850 K by disproportionation of CO. Electron diffraction and high resolution electron imaging as well as electron energy loss spectroscopy and x-ray analysis techniques were used to study the nanofiber formation in different places at the catalyst surface. The particles enclosed by the fibers were found to be Fe 7C 3 and Fe 3C. Crystallographic relationships between deposit and particle were established. The structural properties of the deposit were found to be dependent on the position at the particle surface. Graphitic growth was favored at certain facets. At the particle tip graphene sheet formation competed with Fe 2O 3 oxide formation. We also report the occurrence of a low loss feature between 3 and 4 eV, concurrent with the dispersion of an interface plasmon at the graphite/Fe 2O 3 interface.

AB - Nanofibers were produced by the chemical vapor deposition method in the presence of Fe-catalyst particles at temperatures of 700-850 K by disproportionation of CO. Electron diffraction and high resolution electron imaging as well as electron energy loss spectroscopy and x-ray analysis techniques were used to study the nanofiber formation in different places at the catalyst surface. The particles enclosed by the fibers were found to be Fe 7C 3 and Fe 3C. Crystallographic relationships between deposit and particle were established. The structural properties of the deposit were found to be dependent on the position at the particle surface. Graphitic growth was favored at certain facets. At the particle tip graphene sheet formation competed with Fe 2O 3 oxide formation. We also report the occurrence of a low loss feature between 3 and 4 eV, concurrent with the dispersion of an interface plasmon at the graphite/Fe 2O 3 interface.

UR - http://www.scopus.com/inward/record.url?scp=0036469405&partnerID=8YFLogxK

U2 - 10.1063/1.1425079

DO - 10.1063/1.1425079

M3 - Article

AN - SCOPUS:0036469405

SN - 0021-8979

VL - 91

SP - 1657

EP - 1660

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 3

ER -

Electron microscopy and electron energy loss spectroscopy studies of carbon fiber formation at Fe catalysts

Abstract

Access to Document

Other files and links

Fingerprint

Cite this