Wet-etched Ni foils as active catalysts towards carbon nanofiber growth

D. Mata; M. Ferro; A. J.S. Fernandes; M. Amaral; F. J. Oliveira; P. M.F.J. Costa; R. F. Silva

doi:10.1016/j.carbon.2010.04.016

Wet-etched Ni foils as active catalysts towards carbon nanofiber growth

D. Mata^*, M. Ferro, A. J.S. Fernandes, M. Amaral, F. J. Oliveira, P. M.F.J. Costa, R. F. Silva

^*Corresponding author for this work

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

15 Scopus citations

Abstract

A study of wet-chemical etching treatments for nickel foils and the growth parameters for carbon nanostructures on them using hot-filament chemical vapour deposition (CVD) is described. Catalytically-active protrusions were produced on the Ni foils with sizes and densities in the range ∼24-42 nm and ∼202-314 P μm^-2, respectively. These protrusions are found to have a key role in the growth process as they determine the yield and morphology of the carbon deposits. It is shown that well-shaped, nano-sized protrusions are required to achieve high yield growth of hollow-herringbone carbon nanofibers (CNFs) with an in-plane crystallite size of ∼23 nm. Good correlation was seen between the statistical distributions of the protrusion size (sp) and the CNF diameters (df) depicting sp/df ratios close to unity. This work sheds light on the mechanisms behind CVD growth on metal foils.

Original language	English (US)
Pages (from-to)	2839-2854
Number of pages	16
Journal	Carbon
Volume	48
Issue number	10
DOIs	https://doi.org/10.1016/j.carbon.2010.04.016
State	Published - Aug 2010
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Materials Science

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10.1016/j.carbon.2010.04.016

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title = "Wet-etched Ni foils as active catalysts towards carbon nanofiber growth",

abstract = "A study of wet-chemical etching treatments for nickel foils and the growth parameters for carbon nanostructures on them using hot-filament chemical vapour deposition (CVD) is described. Catalytically-active protrusions were produced on the Ni foils with sizes and densities in the range ∼24-42 nm and ∼202-314 P μm-2, respectively. These protrusions are found to have a key role in the growth process as they determine the yield and morphology of the carbon deposits. It is shown that well-shaped, nano-sized protrusions are required to achieve high yield growth of hollow-herringbone carbon nanofibers (CNFs) with an in-plane crystallite size of ∼23 nm. Good correlation was seen between the statistical distributions of the protrusion size (sp) and the CNF diameters (df) depicting sp/df ratios close to unity. This work sheds light on the mechanisms behind CVD growth on metal foils.",

author = "D. Mata and M. Ferro and Fernandes, {A. J.S.} and M. Amaral and Oliveira, {F. J.} and Costa, {P. M.F.J.} and Silva, {R. F.}",

year = "2010",

month = aug,

doi = "10.1016/j.carbon.2010.04.016",

language = "English (US)",

volume = "48",

pages = "2839--2854",

journal = "Carbon",

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TY - JOUR

T1 - Wet-etched Ni foils as active catalysts towards carbon nanofiber growth

AU - Mata, D.

AU - Ferro, M.

AU - Fernandes, A. J.S.

AU - Amaral, M.

AU - Oliveira, F. J.

AU - Costa, P. M.F.J.

AU - Silva, R. F.

PY - 2010/8

Y1 - 2010/8

N2 - A study of wet-chemical etching treatments for nickel foils and the growth parameters for carbon nanostructures on them using hot-filament chemical vapour deposition (CVD) is described. Catalytically-active protrusions were produced on the Ni foils with sizes and densities in the range ∼24-42 nm and ∼202-314 P μm-2, respectively. These protrusions are found to have a key role in the growth process as they determine the yield and morphology of the carbon deposits. It is shown that well-shaped, nano-sized protrusions are required to achieve high yield growth of hollow-herringbone carbon nanofibers (CNFs) with an in-plane crystallite size of ∼23 nm. Good correlation was seen between the statistical distributions of the protrusion size (sp) and the CNF diameters (df) depicting sp/df ratios close to unity. This work sheds light on the mechanisms behind CVD growth on metal foils.

AB - A study of wet-chemical etching treatments for nickel foils and the growth parameters for carbon nanostructures on them using hot-filament chemical vapour deposition (CVD) is described. Catalytically-active protrusions were produced on the Ni foils with sizes and densities in the range ∼24-42 nm and ∼202-314 P μm-2, respectively. These protrusions are found to have a key role in the growth process as they determine the yield and morphology of the carbon deposits. It is shown that well-shaped, nano-sized protrusions are required to achieve high yield growth of hollow-herringbone carbon nanofibers (CNFs) with an in-plane crystallite size of ∼23 nm. Good correlation was seen between the statistical distributions of the protrusion size (sp) and the CNF diameters (df) depicting sp/df ratios close to unity. This work sheds light on the mechanisms behind CVD growth on metal foils.

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DO - 10.1016/j.carbon.2010.04.016

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SN - 0008-6223

VL - 48

SP - 2839

EP - 2854

JO - Carbon

JF - Carbon

IS - 10

ER -

Wet-etched Ni foils as active catalysts towards carbon nanofiber growth

Abstract

ASJC Scopus subject areas

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