By a News Reporter-Staff News Editor at Physics Week -- Current study results on Nanofibers have been published. According to news reporting out of Trondheim, Norway, by VerticalNews editors, research stated, "Molecular dynamics simulations based on a reactive force field (ReaxFF) are performed to examine the effects of the variable morphologies of fishbone-type carbon effects of the variable morphologies of fishbone-type carbon nanofibers (f-CNFs) on the microstuctures of supported Pt-100 clusters. Four f-CNF cone-helix models with different basal-to-edge surface area ratios and edge plane terminations are employed."
Our news journalists obtained a quote from the research from the Norwegian University of Science and Technology (NTNU), "Calculated results indicate upon adsorption of Pt-100 clusters a fraction of Pt atoms migrates from the metal particles onto the f-CNFs either to accumulate at the metal-support interface or to attain a single atom adsorption on the supports. With decreasing apex angle or introduction of H termination, the Pt atoms are more likely to be coordinated to the basal planes and the binding energies of the Pt-100 clusters to the f-CNFs are lowered, accompanied by a lower degree of the cluster reconstruction. On the contrary, if more f-CNF edge planes are exposed, a higher Pt dispersion, lower surface first-shell Pt-Pt coordination numbers, and longer Pt-Pt surface bonds are attained."
According to the news editors, the research concluded: "Considering the interplay between the geometric and the electronic structures of transition metal surfaces, the relationship among the support morphologies, the metal-support interactions, and the catalytic properties of the active Pt clusters is eventually elucidated."
For more information on this research see: Evolution of Pt Nanoparticles Supported on Fishbone-Type Carbon Nanofibers with Cone-Helix Structures: A Molecular Dynamics Study. Journal of Physical Chemistry C, 2013;117(27):14261-14271. 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 journalists report that additional information may be obtained by contacting H.Y. Cheng, Norwegian Univ Sci & Technol NTNU, Dept. of Chem Engn, N-7491 Trondheim, Norway. Additional authors for this research include Y.A. Zhu, P.O. Astrand, D. Chen, P. Li and X.G. Zhou.
Keywords for this news article include: Norway, Europe, Physics, Trondheim, Nanoparticle, Nanotechnology, Molecular Dynamics, Emerging Technologies
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