Gas-phase particle size distributions during vapor phase condensation of fullerenes

Abhijit Gurav, Toivo Kodas, Lu-min Wang, Esko Kauppinen, Jorma Joutsensaari

Research output: Contribution to journalArticleScientific

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Abstract

Nanometer-size fullerene particles were generated via vapor condensation in a continuous flow system starting from pure C60 and mixed fullerene extract (C60/C70). Vapor condensation was carried out by cooling a nitrogen gas stream containing fullerene vapors from 400–650°C to room temperature. Particles were partly amorphous at 400°C, and became crystalline C60 when processed above 500°C. The average particle diameter and particle number concentration increased with increasing processing temperature. The particles had average sizes of 30, 35 and 40 nm and total number concentrations of 2.2 × 106, 3.5 × 106, and 5.0 × 106 #/cm3, respectively at 500, 525 and 550°C.
Original languageEnglish
Pages (from-to)491-496
JournalNanostructured Materials
Volume4
Issue number5
DOIs
Publication statusPublished - 1995
MoE publication typeB1 Article in a scientific magazine

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fullerene
condensation
particle size
gas
temperature
particle
cooling
nitrogen

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Gurav, Abhijit ; Kodas, Toivo ; Wang, Lu-min ; Kauppinen, Esko ; Joutsensaari, Jorma. / Gas-phase particle size distributions during vapor phase condensation of fullerenes. In: Nanostructured Materials. 1995 ; Vol. 4, No. 5. pp. 491-496.
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abstract = "Nanometer-size fullerene particles were generated via vapor condensation in a continuous flow system starting from pure C60 and mixed fullerene extract (C60/C70). Vapor condensation was carried out by cooling a nitrogen gas stream containing fullerene vapors from 400–650°C to room temperature. Particles were partly amorphous at 400°C, and became crystalline C60 when processed above 500°C. The average particle diameter and particle number concentration increased with increasing processing temperature. The particles had average sizes of 30, 35 and 40 nm and total number concentrations of 2.2 × 106, 3.5 × 106, and 5.0 × 106 #/cm3, respectively at 500, 525 and 550°C.",
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Gas-phase particle size distributions during vapor phase condensation of fullerenes. / Gurav, Abhijit; Kodas, Toivo; Wang, Lu-min; Kauppinen, Esko; Joutsensaari, Jorma.

In: Nanostructured Materials, Vol. 4, No. 5, 1995, p. 491-496.

Research output: Contribution to journalArticleScientific

TY - JOUR

T1 - Gas-phase particle size distributions during vapor phase condensation of fullerenes

AU - Gurav, Abhijit

AU - Kodas, Toivo

AU - Wang, Lu-min

AU - Kauppinen, Esko

AU - Joutsensaari, Jorma

N1 - Project code: KET4406

PY - 1995

Y1 - 1995

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AB - Nanometer-size fullerene particles were generated via vapor condensation in a continuous flow system starting from pure C60 and mixed fullerene extract (C60/C70). Vapor condensation was carried out by cooling a nitrogen gas stream containing fullerene vapors from 400–650°C to room temperature. Particles were partly amorphous at 400°C, and became crystalline C60 when processed above 500°C. The average particle diameter and particle number concentration increased with increasing processing temperature. The particles had average sizes of 30, 35 and 40 nm and total number concentrations of 2.2 × 106, 3.5 × 106, and 5.0 × 106 #/cm3, respectively at 500, 525 and 550°C.

U2 - 10.1016/0965-9773(94)90056-6

DO - 10.1016/0965-9773(94)90056-6

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JO - Nanostructured Materials

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