Growth of Nitrogen-Doped Carbon Nanotubes and Fibers over a Gold-on-Alumina Catalyst Full article
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Carbon
ISSN: 0008-6223 , E-ISSN: 1873-3891 |
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| Output data | Year: 2012, Volume: 50, Number: 3, Pages: 1186-1196 Pages count : 11 DOI: 10.1016/j.carbon.2011.10.033 | ||||
| Tags | Alumina; Carbon nanotubes; Catalysts; Gold; Nitrogen; Photoelectron spectroscopy; Vapors; X ray photoelectron spectroscopy | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Foundation for Basic Research | 09-03-12272 |
Abstract:
Nitrogen-doped carbon nanotubes (N-CNTs) were synthesized by chemical vapor decomposition of a N,C-precursor over a supported Au catalyst. Large quantities of carbon nanotubes with a compartmentalized structure containing ca. 5 at.% N were produced over a 1.5% Au/δ-Al2O3 catalyst with a mean diameter of Au particles equal to 2.8 nm under continuous flow conditions at 800 °С and 1 bar of the reaction gas mixture containing pyridine (Py) vapor (5 vol.%), Н2 (10–20 vol.%) and Ar (balance). The majority of the N-CNTs obtained after 10 min have outer diameters (ODs) of 13–45 nm and closed tips without any encapsulated gold particles of the catalyst which indicates the “base-growth” mechanism of N-CNT formation. Carbon deposits synthesized for 30–135 min contain carbon fibers with OD values up to several micrometers, formed by self-assembling of N-CNTs, and individual N-CNTs. X-ray photoelectron spectra provide evidence for various chemical states of nitrogen (pyridinic, “quaternary” (graphitic) and pyrrolic nitrogen) in the N-CNTs, and these are discussed.
Cite:
Ilinich G.N.
, Moroz B.L.
, Rudina N.A.
, Prosvirin I.P.
, Bukhtiyarov V.I.
Growth of Nitrogen-Doped Carbon Nanotubes and Fibers over a Gold-on-Alumina Catalyst
Carbon. 2012. V.50. N3. P.1186-1196. DOI: 10.1016/j.carbon.2011.10.033 WOS Scopus РИНЦ ANCAN OpenAlex
Growth of Nitrogen-Doped Carbon Nanotubes and Fibers over a Gold-on-Alumina Catalyst
Carbon. 2012. V.50. N3. P.1186-1196. DOI: 10.1016/j.carbon.2011.10.033 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | May 8, 2011 |
| Accepted: | Oct 19, 2011 |
| Published online: | Oct 25, 2011 |
| Published print: | Mar 1, 2012 |
Identifiers:
| Web of science: | WOS:000300471700053 |
| Scopus: | 2-s2.0-84155164465 |
| Elibrary: | 17970658 |
| Chemical Abstracts: | 2011:1671240 |
| Chemical Abstracts (print): | 156:152207 |
| OpenAlex: | W1993404123 |