Purification and characterization by HREM of multi-wall nanotubes

Jean-François Colomer; Patricia Piedigrosso; Isabelle Willems; Catherine Journet; Patrick Bernier; G. Van Tendeloo; Antonio Fonseca; Janos B.Nagy

doi:10.1039/A806804F

Purification and characterization by HREM of multi-wall nanotubes

Jean-François Colomer, Patricia Piedigrosso, Isabelle Willems, Catherine Journet, Patrick Bernier, G. Van Tendeloo, Antonio Fonseca, Janos B.Nagy

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

Abstract

Carbon nanotubes were produced in large amounts by catalytic decomposition of acetylene over a Co incorporated zeolite NaY support. Purification of multi-wall nanotubes was required in order to eliminate catalyst and amorphous carbon produced by thermal decomposition of hydrocarbon. First, separation of nanotubes and catalyst particles was carried out by hydrofluoric acid treatment. Then, two ways of removing amorphous carbon were studied: permanganate oxidation and air oxidation. The quality of nanotubes was characterized by means of transmission electron microscopy and the yield of pure nanotubes was quantitatively determined. Changes caused by treatment of the nanotubes were investigated by high resolution electron microscopy and a comparison was made between the nanotubes produced by this method and those synthesized by an arc discharge process after oxidation treatment.

Original language	English
Pages (from-to)	3753-3758
Number of pages	6
Journal	Journal of the Chemical Society, Faraday Transactions
Volume	94
Issue number	24
DOIs	https://doi.org/10.1039/A806804F
Publication status	Published - 1998

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title = "Purification and characterization by HREM of multi-wall nanotubes",

abstract = "Carbon nanotubes were produced in large amounts by catalytic decomposition of acetylene over a Co incorporated zeolite NaY support. Purification of multi-wall nanotubes was required in order to eliminate catalyst and amorphous carbon produced by thermal decomposition of hydrocarbon. First, separation of nanotubes and catalyst particles was carried out by hydrofluoric acid treatment. Then, two ways of removing amorphous carbon were studied: permanganate oxidation and air oxidation. The quality of nanotubes was characterized by means of transmission electron microscopy and the yield of pure nanotubes was quantitatively determined. Changes caused by treatment of the nanotubes were investigated by high resolution electron microscopy and a comparison was made between the nanotubes produced by this method and those synthesized by an arc discharge process after oxidation treatment. ",

author = "Jean-Fran{\c c}ois Colomer and Patricia Piedigrosso and Isabelle Willems and Catherine Journet and Patrick Bernier and {Van Tendeloo}, G. and Antonio Fonseca and Janos B.Nagy",

year = "1998",

doi = "10.1039/A806804F",

language = "English",

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pages = "3753--3758",

journal = "Journal of the Chemical Society, Faraday Transactions",

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T1 - Purification and characterization by HREM of multi-wall nanotubes

AU - Colomer, Jean-François

AU - Piedigrosso, Patricia

AU - Willems, Isabelle

AU - Journet, Catherine

AU - Bernier, Patrick

AU - Van Tendeloo, G.

AU - Fonseca, Antonio

AU - B.Nagy, Janos

PY - 1998

Y1 - 1998

N2 - Carbon nanotubes were produced in large amounts by catalytic decomposition of acetylene over a Co incorporated zeolite NaY support. Purification of multi-wall nanotubes was required in order to eliminate catalyst and amorphous carbon produced by thermal decomposition of hydrocarbon. First, separation of nanotubes and catalyst particles was carried out by hydrofluoric acid treatment. Then, two ways of removing amorphous carbon were studied: permanganate oxidation and air oxidation. The quality of nanotubes was characterized by means of transmission electron microscopy and the yield of pure nanotubes was quantitatively determined. Changes caused by treatment of the nanotubes were investigated by high resolution electron microscopy and a comparison was made between the nanotubes produced by this method and those synthesized by an arc discharge process after oxidation treatment.

AB - Carbon nanotubes were produced in large amounts by catalytic decomposition of acetylene over a Co incorporated zeolite NaY support. Purification of multi-wall nanotubes was required in order to eliminate catalyst and amorphous carbon produced by thermal decomposition of hydrocarbon. First, separation of nanotubes and catalyst particles was carried out by hydrofluoric acid treatment. Then, two ways of removing amorphous carbon were studied: permanganate oxidation and air oxidation. The quality of nanotubes was characterized by means of transmission electron microscopy and the yield of pure nanotubes was quantitatively determined. Changes caused by treatment of the nanotubes were investigated by high resolution electron microscopy and a comparison was made between the nanotubes produced by this method and those synthesized by an arc discharge process after oxidation treatment.

U2 - 10.1039/A806804F

DO - 10.1039/A806804F

M3 - Article

SN - 0956-5000

VL - 94

SP - 3753

EP - 3758

JO - Journal of the Chemical Society, Faraday Transactions

JF - Journal of the Chemical Society, Faraday Transactions

IS - 24

ER -

Purification and characterization by HREM of multi-wall nanotubes

Abstract

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