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Studies from Isfahan University of Technology Reveal New Findings on Alcohols (A new strategy for the synthesis of 3-D Pt nanoparticles on reduced...

July 8, 2014



Studies from Isfahan University of Technology Reveal New Findings on Alcohols (A new strategy for the synthesis of 3-D Pt nanoparticles on reduced graphene oxide through surface functionalization, Application for methanol oxidation and oxygen ...)

By a News Reporter-Staff News Editor at Life Science Weekly -- Current study results on Alcohols have been published. According to news reporting originating in Esfahan, Iran, by NewsRx journalists, research stated, "Here, a new functionalization method is introduced to control deposition of Pt nanoparticles on reduced graphene oxide (rGO). In this paper, we investigate the heterogeneous deposition of nanometer-sized Pt islands on rGO subjected to oxidation prior to deposition in the same conditions."

The news reporters obtained a quote from the research from the Isfahan University of Technology, "We demonstrate that functional groups act as nucleation sites for Pt nanoparticle, and that homogeneous nucleation of small particles can be achieved by combining surface functionalization with diazonium chemistry and appropriate stabilizers in solution. For the purposes of this study, an effective electrochemical mediator is prepared using 4-aminothiophenol-modified rGO as a support decorated with Pt nanoparticles ((PtSC6H4)-S-@-rGO) for the oxidation of methanol and reduction of oxygen. The surface morphology and composition of (PtSC6H4)-S-@-rGO and Pt(@)rGO as well as their activity toward methanol oxidation and oxygen reduction are investigated by atomic force microscopy, field emission scanning electron microscopy, X-ray diffraction, cyclic voltammetry, and electrochemical impedance spectroscopy. The results show that decoration of Pt nanoparticle on functionalized rGO leads to three-dimensional Pt nanostructures."

According to the news reporters, the research concluded: "Comparisons of the synthesized Pt(@)rGO and (PtSC6H4)-S-@-rGO in terms of their electrochemical performance also show that, compared to Pt(@)rGO, (PtSC6H4)-S-@-rGO has a better electrocatalytic activity for methanol oxidation and oxygen reduction in a solution containing 0.5 mol L-1 H2SO4 and/or 1.0 mol L-1 methanol."

For more information on this research see: A new strategy for the synthesis of 3-D Pt nanoparticles on reduced graphene oxide through surface functionalization, Application for methanol oxidation and oxygen reduction. Electrochimica Acta, 2014;130():397-405. Electrochimica Acta can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England (see also Alcohols).

Our news correspondents report that additional information may be obtained by contacting A.A. Ensafi, Isfahan Univ Technol, Dept. of Chem, Esfahan 8415683111, Iran. Additional authors for this research include M. Jafari-Asl and B. Rezaei.

Keywords for this news article include: Iran, Asia, Esfahan, Alcohols, Methanol, Chemistry, Chalcogens, Nanoparticle, Nanotechnology, Electrochemical, Emerging Technologies

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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