Morphology, Microstructure, and Hydrogen Content of Carbon Nanostructures Obtained by PECVD at Various Temperatures

Morphology, Microstructure, and Hydrogen Content of Carbon Nanostructures Obtained by PECVD at Various Temperatures

Carbon nanostructures were obtained by acetylene injection into an argon plasma jet in the presence of hydrogen. The samples were synthesized in similar conditions, except that the substrate deposition temperatures TD were varied, ranging from 473 to 973 K. A strong dependence of morphology, structu...

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Main Authors: M. Acosta Gentoiu, R. Betancourt-Riera, S. Vizireanu, I. Burducea, V. Marascu, S. D. Stoica, B. I. Bita, G. Dinescu, R. Riera
Format: Article
Language:English
Published: Hindawi Limited 2017-01-01
Series:Journal of Nanomaterials
Online Access:http://dx.doi.org/10.1155/2017/1374973
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spelling doaj-0d4a563e04834516a09254c7adef63022020-11-24T23:09:48ZengHindawi LimitedJournal of Nanomaterials1687-41101687-41292017-01-01201710.1155/2017/13749731374973Morphology, Microstructure, and Hydrogen Content of Carbon Nanostructures Obtained by PECVD at Various TemperaturesM. Acosta Gentoiu0R. Betancourt-Riera1S. Vizireanu2I. Burducea3V. Marascu4S. D. Stoica5B. I. Bita6G. Dinescu7R. Riera8Departamento de Investigación en Física, Universidad de Sonora, Apdo. Postal 5-088, 83190 Hermosillo, SON, MexicoInstituto Tecnológico de Hermosillo, Avenida Tecnológico S/N, Col. Sahuaro, 83170 Hermosillo, SON, MexicoNational Institute for Lasers, Plasma and Radiation Physics, Atomistilor No. 409, P.O. Box MG-36, Măgurele, Bucharest, RomaniaHoria Hulubei National Institute of Physics and Nuclear Engineering, 30 Reactorului Street, Măgurele, 077125 Ilfov, RomaniaFaculty of Physics, University of Bucharest, 405 Atomistilor Street, 077125 Măgurele, RomaniaNational Institute for Lasers, Plasma and Radiation Physics, Atomistilor No. 409, P.O. Box MG-36, Măgurele, Bucharest, RomaniaFaculty of Physics, University of Bucharest, 405 Atomistilor Street, 077125 Măgurele, RomaniaNational Institute for Lasers, Plasma and Radiation Physics, Atomistilor No. 409, P.O. Box MG-36, Măgurele, Bucharest, RomaniaDepartamento de Investigación en Física, Universidad de Sonora, Apdo. Postal 5-088, 83190 Hermosillo, SON, MexicoCarbon nanostructures were obtained by acetylene injection into an argon plasma jet in the presence of hydrogen. The samples were synthesized in similar conditions, except that the substrate deposition temperatures TD were varied, ranging from 473 to 973 K. A strong dependence of morphology, structure, and graphitization upon TD was found. We obtained vertical aligned carbon nanotubes (VA-CNTs) at low temperatures as 473 K, amorphous carbon nanoparticles (CNPs) at temperatures from about 573 to 673 K, and carbon nanowalls (CNWs) at high temperatures from 773 to 973 K. Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, elastic recoil detection analysis, X-ray photoelectron spectroscopy, and Raman spectroscopy were used to substantiate the differences in these material types. It is known that hydrogen concentration modifies strongly the properties of the materials. Different concentrations of hydrogen-bonded carbon could be identified in amorphous CNP, VA-CNT, and CNW. Also, the H : C ratios along depth were determined for the obtained materials.http://dx.doi.org/10.1155/2017/1374973
collection DOAJ
language English
format Article
sources DOAJ
author M. Acosta Gentoiu
R. Betancourt-Riera
S. Vizireanu
I. Burducea
V. Marascu
S. D. Stoica
B. I. Bita
G. Dinescu
R. Riera
spellingShingle M. Acosta Gentoiu
R. Betancourt-Riera
S. Vizireanu
I. Burducea
V. Marascu
S. D. Stoica
B. I. Bita
G. Dinescu
R. Riera
Morphology, Microstructure, and Hydrogen Content of Carbon Nanostructures Obtained by PECVD at Various Temperatures
Journal of Nanomaterials
author_facet M. Acosta Gentoiu
R. Betancourt-Riera
S. Vizireanu
I. Burducea
V. Marascu
S. D. Stoica
B. I. Bita
G. Dinescu
R. Riera
author_sort M. Acosta Gentoiu
title Morphology, Microstructure, and Hydrogen Content of Carbon Nanostructures Obtained by PECVD at Various Temperatures
title_short Morphology, Microstructure, and Hydrogen Content of Carbon Nanostructures Obtained by PECVD at Various Temperatures
title_full Morphology, Microstructure, and Hydrogen Content of Carbon Nanostructures Obtained by PECVD at Various Temperatures
title_fullStr Morphology, Microstructure, and Hydrogen Content of Carbon Nanostructures Obtained by PECVD at Various Temperatures
title_full_unstemmed Morphology, Microstructure, and Hydrogen Content of Carbon Nanostructures Obtained by PECVD at Various Temperatures
title_sort morphology, microstructure, and hydrogen content of carbon nanostructures obtained by pecvd at various temperatures
publisher Hindawi Limited
series Journal of Nanomaterials
issn 1687-4110
1687-4129
publishDate 2017-01-01
description Carbon nanostructures were obtained by acetylene injection into an argon plasma jet in the presence of hydrogen. The samples were synthesized in similar conditions, except that the substrate deposition temperatures TD were varied, ranging from 473 to 973 K. A strong dependence of morphology, structure, and graphitization upon TD was found. We obtained vertical aligned carbon nanotubes (VA-CNTs) at low temperatures as 473 K, amorphous carbon nanoparticles (CNPs) at temperatures from about 573 to 673 K, and carbon nanowalls (CNWs) at high temperatures from 773 to 973 K. Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, elastic recoil detection analysis, X-ray photoelectron spectroscopy, and Raman spectroscopy were used to substantiate the differences in these material types. It is known that hydrogen concentration modifies strongly the properties of the materials. Different concentrations of hydrogen-bonded carbon could be identified in amorphous CNP, VA-CNT, and CNW. Also, the H : C ratios along depth were determined for the obtained materials.
url http://dx.doi.org/10.1155/2017/1374973
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