By a News Reporter-Staff News Editor at Physics Week -- Fresh data on Fullerenes are presented in a new report. According to news reporting originating in Kermanshah, Iran, by VerticalNews journalists, research stated, "Molecular dynamics simulations are used to study CO adsorption on Ag nanoclusters ranging from 38 to 500 Ag atoms, supported on carbon nanotube. Each nanocluster was simulated under various-pressures of CO gas at different temperatures."
The news reporters obtained a quote from the research from Razi University, "The absolute value of enthalpy of adsorption was calculated for all of the nanoclusters in constant coverage which is increased sharply by decreasing cluster size. This increasing trend with coverage reaches a maximum around 0.75 ML for Ag-108. Also, the structural changes are irreversible in such a way that by gradually decreasing the pressure to zero, the nanocluster geometry is not reversed to its initial structure in vacuum conditions. It was found that structural irreversibility increases with the size."
According to the news reporters, the research concluded: "Also, the difference between diffusivity of Ag nanoclusters in vacuum and CO atmosphere increases with the size."
For more information on this research see: CO Adsorption on Ag Nanoclusters Supported on Carbon Nanotube: A Molecular Dynamics Study. Journal of Physical Chemistry C, 2014;118(17):9187-9195. Journal of Physical Chemistry C can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Journal of Physical Chemistry C - www.pubs.acs.org/journal/jpccck)
Our news correspondents report that additional information may be obtained by contacting H. Akbarzadeh, Razi Univ, Dept. of Phys Chem, Kermanshah 6714967346, Iran. Additional authors for this research include H. Yaghoubi, A.N. Shamkhali and F. Taherkhani.
Keywords for this news article include: Iran, Asia, Physics, Kermanshah, Fullerenes, Nanoclusters, Nanotechnology, Carbon Nanotubes, Molecular Dynamics, Emerging Technologies
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC