By a News Reporter-Staff News Editor at Life Science Weekly -- A new study on Chalcogens is now available. According to news reporting originating in Little Rock, Arkansas, by NewsRx journalists, research stated, "Vertically aligned platinum nickel (Pt-Ni) alloy nanorod arrays were grown on glassy carbon electrodes using a magnetron sputtering glancing angle deposition (GLAD) technique. X-ray diffraction and electron microscopy results show that the as-deposited nanorods are alloys and that the alloy composition and geometric properties of Pt-Ni nanorods can be changed by controlling the GLAD deposition parameters."
The news reporters obtained a quote from the research from the University of Arkansas, "The GLAD Pt-Ni nanorod electrodes were investigated as potential electrocatalysts for the oxygen reduction reaction (ORR) in polymer electrolyte fuel cells (PEFCs) using cyclic voltammetry (CV) and rotating-disk electrode (RDE) techniques in aqueous perchloric acid electrolyte. The electrochemically active surface area (ECA), determined from the charge for hydrogen adsorption and desorption in the CVs, was estimated to be a factor of 3 or more larger than the geometric surface area of the nanorods. The ORR mass-specific activity of the Pt-Ni nanorods was found to be a factor of 2.3-3.5 higher than that of pure Pt nanorods of the same dimensions and increase with increasing Ni content, whereas ORR area-specific activity enhancement was only observed for the nanorods with the highest Pt content."
According to the news reporters, the research concluded: "In addition, the Pt-Ni nanorods were found to have higher stability against loss of ECA during potential cycling than Pt nanorods and conventional high-surface-area-carbon-supported Pt nanoparticles."
For more information on this research see: GLAD Pt-Ni Alloy Nanorods for Oxygen Reduction Reaction. ACS Catalysis, 2013;3(12):3123-3132. ACS Catalysis can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; ACS Catalysis - www.pubs.acs.org/journal/accacs)
Our news correspondents report that additional information may be obtained by contacting N.N. Kariuki, University of Arkansas, Dept. of Appl Sci, Little Rock, AR 72204, United States. Additional authors for this research include W.J. Khudhayer, T. Karabacak and D.J. Myers (see also Chalcogens).
Keywords for this news article include: Nanorod, Arkansas, Chalcogens, Little Rock, United States, Nanotechnology, Emerging Technologies, North and Central America
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