2006
Carbon nanostructures synthesis in microwave plasma torch at atmospheric pressure
JAŠEK, Ondřej, Marek ELIÁŠ, Lenka ZAJÍČKOVÁ, Zuzana KUČEROVÁ, Jiřina MATĚJKOVÁ et. al.Základní údaje
Originální název
Carbon nanostructures synthesis in microwave plasma torch at atmospheric pressure
Název česky
Depozice uhlíkových nanostruktur v mikrovlnném výboji za atmosférického tlaku
Název anglicky
Carbon nanostructures synthesis in microwave plasma torch at atmospheric pressure
Autoři
JAŠEK, Ondřej (203 Česká republika, garant), Marek ELIÁŠ (203 Česká republika), Lenka ZAJÍČKOVÁ (203 Česká republika), Zuzana KUČEROVÁ (203 Česká republika), Jiřina MATĚJKOVÁ (203 Česká republika), Antonín REK (203 Česká republika) a Jiří BURŠÍK (203 Česká republika)
Vydání
1. vyd. Brno, Book of Abstracts 3rd International conference on microwave chemistry, od s. PO-7, 1 s. 2006
Nakladatel
Masaryk University
Další údaje
Jazyk
čeština
Typ výsledku
Stať ve sborníku
Obor
10305 Fluids and plasma physics
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Kód RIV
RIV/00216224:14310/06:00028950
Organizační jednotka
Přírodovědecká fakulta
ISBN
80-210-4070-X
Klíčová slova anglicky
carbon nanostructures; atmospheric pressure; microwave discharge; electron microscopy
Změněno: 14. 12. 2006 15:30, Mgr. Ondřej Jašek, Ph.D.
V originále
We have successfully synthesized CNTs in microwave plasma torch at atmospheric pressure from the mixture of methane, hydrogen and argon. The plasma torch was generated at the frequency of 2.45 GHz using an iron hollow electrode. Argon (1000 sccm) was flowing through the electrode whereas methane (10-40 sccm) and hydrogen (100-400 sccm) were added to the expanding torch from outside. The CNTs were grown on substrates placed at various distances from the torch electrode. The substrates were silicon wafers(10x15 mm) with deposited 200 nm thick silicon oxide layer and thin layer (5-20 nm) of iron catalyst on the top. The samples were imaged by scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The processes in the discharge were monitored by optical emission spectroscopy(OES). The SEM analysis showed presence of well aligned 50 micrometer long multi-wall CNTs with narrow diameter distribution centered around 20 nm. Except the carbon nanotubes the layers often contained various carbon and carbon/iron structures.
Anglicky
We have successfully synthesized CNTs in microwave plasma torch at atmospheric pressure from the mixture of methane, hydrogen and argon. The plasma torch was generated at the frequency of 2.45 GHz using an iron hollow electrode. Argon (1000 sccm) was flowing through the electrode whereas methane (10-40 sccm) and hydrogen (100-400 sccm) were added to the expanding torch from outside. The CNTs were grown on substrates placed at various distances from the torch electrode. The substrates were silicon wafers(10x15 mm) with deposited 200 nm thick silicon oxide layer and thin layer (5-20 nm) of iron catalyst on the top. The samples were imaged by scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The processes in the discharge were monitored by optical emission spectroscopy(OES). The SEM analysis showed presence of well aligned 50 micrometer long multi-wall CNTs with narrow diameter distribution centered around 20 nm. Except the carbon nanotubes the layers often contained various carbon and carbon/iron structures.
Návaznosti
| GA202/05/0607, projekt VaV |
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| MSM0021622411, záměr |
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