News Column

Findings from Duke University in Nuclear Magnetic Resonance Reported

June 6, 2014

By a News Reporter-Staff News Editor at Health & Medicine Week -- Investigators publish new report on Nuclear Magnetic Resonance. According to news reporting from Durham, North Carolina, by NewsRx journalists, research stated, "We report an in situ nuclear magnetic resonance (NMR) study of water adsorption in a series of activated carbon samples with pore sizes of a few nanometers down to the subnanometer scale (nanoporous carbon). Water adsorption exhibits S-shaped type V isotherms with a steep increase near a certain vapor pressure."

The news correspondents obtained a quote from the research from Duke University, "Using a previously proposed water isotherm model, pore size and pore size distribution are derived from the in situ NMR data, and they are shown to be in good agreement with results derived from N-2 adsorption. The change of H-1 NMR spin-lattice relaxation time of adsorbed H2O with vapor pressure is consistent with the mechanism of water cluster formation at surface groups preceding the occurrence of pore filling. NMR spectra of high pressure H-2 gas in nanoporous carbon with preadsorbed D2O proves unambiguously that water preferentially fills the smaller nanopores."

According to the news reporters, the research concluded: "These results suggest that water adsorption can potentially be used for the characterization of pore structures of nanoporous carbon, and that in situ NMR is a convenient method for water isotherm measurement with accompanying microscopic information."

For more information on this research see: Water Adsorption in Nanoporous Carbon Characterized by in Situ NMR: Measurements of Pore Size and Pore Size Distribution. Journal of Physical Chemistry C, 2014;118(16):8474-8480. Journal of Physical Chemistry C can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society -; Journal of Physical Chemistry C -

Our news journalists report that additional information may be obtained by contacting H.J. Wang, Duke University, Dept. of Chem, Durham, NC 27708, United States. Additional authors for this research include A. Kleinhammes, T.P. McNicholas, J. Liu and Y. Wu (see also Nuclear Magnetic Resonance).

Keywords for this news article include: Durham, Nanoporous, United States, North Carolina, Nanotechnology, Emerging Technologies, North and Central America, Nuclear Magnetic Resonance

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Source: Health & Medicine Week

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