Complementary studies of structural characteristics for carbon materials with X-rays and neutrons

Burian, Andrzej and Dore, John C. and Hannon, Alex C. and Honkimaki, V. (2004) Complementary studies of structural characteristics for carbon materials with X-rays and neutrons. Journal of Alloys and Compounds, 401 (1-2). pp. 18-23. ISSN 0925-8388 . (The full text of this publication is not available from this repository)

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Official URL
http://dx.doi.org/10.1016/j.jallcom.2005.02.063

Abstract

Carbon materials have a wide range of structures at an atomic and mesoscopic level that can be investigated by X-ray and thermal neutron scattering. New techniques are now available through the use of third-generation synchrotron radiation facilities and pulsed neutron sources. Examples are given for the study of activated carbons and carbon nanotubes that demonstrate the use of complementary features for the two radiation probes. The structural information is obtained as a pair correlation function from the diffraction measurements over a wide Q-range and the modem techniques use incident beams with a short wavelength of similar to 0.1 angstrom to achieve high Q-values, typically 50 angstrom(-1) for neutrons and 25 angstrom(-1) for X-rays. The Fourier transform yields a pair correlation function, d(r), with a much higher spatial resolution than can be achieved by other means and which gives quantitative data for direct modeling of the real-space structures. For the microporous carbons, there is also an interest in the low-Q region that defines the correlations on a much larger length scale and which relates to the complex pore network in these important commercial materials. Texture studies are also possible and have been used to study the alignment of carbon nanotubes in a templated alumina membrane.

Item Type: Article
Uncontrolled keywords: nanostructures; activated carbons; carbon nanotubes; X-ray diffraction; neutron diffraction; small-angle scattering
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: Maggie Francis
Date Deposited: 29 May 2009 06:36
Last Modified: 08 Jul 2014 10:11
Resource URI: http://kar.kent.ac.uk/id/eprint/13355 (The current URI for this page, for reference purposes)
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