Sensing Surface Phase Transitions on Fullerene C60 Nanospheres in Water-Ethanol Mixture

Mostafa M. El-Ashry; Maher S. Amer; John F. Maguire

doi:10.1109/EICEMC.2003.1247935

Sensing Surface Phase Transitions on Fullerene C₆₀ Nanospheres in Water-Ethanol Mixture

Mostafa M. El-Ashry
, Maher S. Amer
, John F. Maguire

Mechanical and Materials Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

This paper reports the results of a study of adsorption of small molecules on the surface of buckminsterfullerene, C60 and on single walled carbon nanotubes (SWNT). The pressure dependence of the Raman spectrum was investigated over the range 0-100 kbar in methanol-water mixtures that were used as the pressure-transmitting-fluid (PTF) in a diamond anvil cell. It is found that the spectral shift and its pressure derivative are sensitive to both the applied pressure and to the composition of the PTF. These observations are consistent with an explanation that involves preferential adsorption onto the surface of the C/sub 60/. In particular, the notion of C60 collapse need not be invoked to explain the observations.

Original language	American English
Journal	Proceedings of the Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference
DOIs	https://doi.org/10.1109/EICEMC.2003.1247935
State	Published - Jan 1 2003

Disciplines

Engineering
Materials Science and Engineering
Mechanical Engineering

Access to Document

10.1109/EICEMC.2003.1247935License: Unspecified

Cite this

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title = "Sensing Surface Phase Transitions on Fullerene C60 Nanospheres in Water-Ethanol Mixture",

abstract = " This paper reports the results of a study of adsorption of small molecules on the surface of buckminsterfullerene, C60 and on single walled carbon nanotubes (SWNT). The pressure dependence of the Raman spectrum was investigated over the range 0-100 kbar in methanol-water mixtures that were used as the pressure-transmitting-fluid (PTF) in a diamond anvil cell. It is found that the spectral shift and its pressure derivative are sensitive to both the applied pressure and to the composition of the PTF. These observations are consistent with an explanation that involves preferential adsorption onto the surface of the C/sub 60/. In particular, the notion of C60 collapse need not be invoked to explain the observations.",

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AB - This paper reports the results of a study of adsorption of small molecules on the surface of buckminsterfullerene, C60 and on single walled carbon nanotubes (SWNT). The pressure dependence of the Raman spectrum was investigated over the range 0-100 kbar in methanol-water mixtures that were used as the pressure-transmitting-fluid (PTF) in a diamond anvil cell. It is found that the spectral shift and its pressure derivative are sensitive to both the applied pressure and to the composition of the PTF. These observations are consistent with an explanation that involves preferential adsorption onto the surface of the C/sub 60/. In particular, the notion of C60 collapse need not be invoked to explain the observations.

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