By a News Reporter-Staff News Editor at Life Science Weekly -- Research findings on Alcohols are discussed in a new report. According to news originating from Bochum, Germany, by NewsRx correspondents, research stated, "Mild-condition nitric acid functionalized carbon nanotubes were used as support for PtNi electrocatalysts with variation of Pt to Ni atomic ratio prepared by a polyol method in which ethylene glycol was used as solvent and reducing agent under conventional reflux conditions. TPD, TGA, N-2 adsorption and cyclic voltammetry confirmed the presence of functional groups in the functionalized carbon nanotubes."
Our news journalists obtained a quote from the research from Ruhr University, "Supported PtNi nanocatalysts were characterized with ICP-OES, TEM, XRD, XPS and XAFS. Well dispersed particles on the supporting material with particle sizes in the range of 2-3 nm were obtained. PtNi alloy formation was concluded from XRD, XPS and XAFS results, while the latter two methods point to the formation of Ni oxides as well. The elemental distribution within the catalyst nanoparticles is inhomogeneous with Ni enrichment close to the support. Heat treatment in inert gas up to 400 degrees C results in restructuring of the catalysts surface which changes the active sites arrangements. CV and CO stripping measurements showed that the PtNi catalysts have a higher electrocatalytic activity toward methanol oxidation in comparison to a commercial Pt/C E-TEK catalyst and the highest activity was found for a Pt to Ni atomic ratio of 3. The prepared catalysts show highly stable mass specific activity over 200 potential cycles. The catalysts treated at higher temperature (400 degrees C) show a surface enriched in Pt and exhibit lower activity for methanol oxidation reaction but higher stability over 200 cycles."
According to the news editors, the research concluded: "The high catalytic activity and durability of the prepared PtNi electrocatalysts render them possible candidate catalysts for methanol oxidation in direct methanol fuel cells (DMFCs)."
For more information on this research see: PtNi supported on oxygen functionalized carbon nanotubes: In depth structural characterization and activity for methanol electrooxidation. Applied Catalysis B-Environmental, 2013;142():849-860. Applied Catalysis B-Environmental can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands (see also Alcohols).
The news correspondents report that additional information may be obtained from A.A.A. Nassr, Ruhr University of Bochum, Lehrstuhl Technical Chem, Fak Chem & Biochem, Bochum, Germany. Additional authors for this research include I. Sinev, W. Grunert and M. Bron.
Keywords for this news article include: Bochum, Europe, Germany, Alcohols, Methanol, Chalcogens, Fullerenes, Nanotechnology, Carbon Nanotubes, Emerging Technologies
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2013, NewsRx LLC