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Electronic and optical properties of the express purified SWCNTs produced by HiPCO process

Link to publisher's homepage at http://www.unimap.edu.my/ ; Open access only applicable for vol vol. 1; issue 1, 2008 & vol. 2; issue 1 & 2, 2009.

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Main Author: Badis, Bendjemil
Format: Article
Language:English
Published: Universiti Malaysia Perlis 2009
Subjects:
Gaussian fit
Loss function
High Resolution Electron energy loss spectroscopy
Catalysis
Nanotubes
Carbon
Nanostructured materials
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/7117
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spelling my.unimap-71172009-09-03T01:49:52Z Electronic and optical properties of the express purified SWCNTs produced by HiPCO process Badis, Bendjemil Gaussian fit Loss function High Resolution Electron energy loss spectroscopy Catalysis Nanotubes Carbon Nanostructured materials Link to publisher's homepage at http://www.unimap.edu.my/ ; Open access only applicable for vol vol. 1; issue 1, 2008 & vol. 2; issue 1 & 2, 2009. Single-walled carbon nanotubes have been synthesized by a gas-phase CO decomposition (HiPCO) process, involving high-pressure disproportionation of CO as carbon feedstock and catalytic iron particles were obtained from pyrolysis of Fe(CO)5. The diameter and diameter distribution of as grown material dependents on various parameters, the strong is the pressure of CO cold transverse the Fe(CO)5, nozzle geometry and position for the injection of the reactant in the reaction chamber to produce smaller diameter (about 0.9 nm) at higher CO pressure. The HiPCO materials containing iron were purified by a two-step process of oxidation in oxygen atmosphere and successive washing the mixture of hydrochloric and nitric acids neutralised and distilled water (1:1:1). The optical and electronic properties were studied using optical absorption and infrared spectroscopy; in addition, high-resolution transmission electron energy-loss spectroscopy was used to analyse the loss function, electron diffraction and core level excitations. The degree of purification achieved was estimated using transmission electron microscopy. Furthermore, the present procedure has a no sufficiently change in the diameter and diameter distribution after Gaussian fit of the optical absorbance spectra. The estimation of the degree of purification is possible by the analysis of core level excitation; finally high purity SWCNTs were obtained. 2009-09-03T01:49:52Z 2009-09-03T01:49:52Z 2009 Article International Journal of Nanoelectronics and Materials, vol.2 (2), 2009, pages 173-182. 1985-5761 (Printed) 1997-4434 (Online) http://hdl.handle.net/123456789/7117 en Universiti Malaysia Perlis
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Gaussian fit
Loss function
High Resolution Electron energy loss spectroscopy
Catalysis
Nanotubes
Carbon
Nanostructured materials
spellingShingle Gaussian fit
Loss function
High Resolution Electron energy loss spectroscopy
Catalysis
Nanotubes
Carbon
Nanostructured materials
Badis, Bendjemil
Electronic and optical properties of the express purified SWCNTs produced by HiPCO process
description Link to publisher's homepage at http://www.unimap.edu.my/ ; Open access only applicable for vol vol. 1; issue 1, 2008 & vol. 2; issue 1 & 2, 2009.
format Article
author Badis, Bendjemil
author_facet Badis, Bendjemil
author_sort Badis, Bendjemil
title Electronic and optical properties of the express purified SWCNTs produced by HiPCO process
title_short Electronic and optical properties of the express purified SWCNTs produced by HiPCO process
title_full Electronic and optical properties of the express purified SWCNTs produced by HiPCO process
title_fullStr Electronic and optical properties of the express purified SWCNTs produced by HiPCO process
title_full_unstemmed Electronic and optical properties of the express purified SWCNTs produced by HiPCO process
title_sort electronic and optical properties of the express purified swcnts produced by hipco process
publisher Universiti Malaysia Perlis
publishDate 2009
url http://dspace.unimap.edu.my/xmlui/handle/123456789/7117
_version_ 1643788695528013824
score 13.222552

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