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Data on Chalcogens Detailed by Researchers at University of Versailles (Determination of selectivity and specific area related to oxygen reduction...

September 2, 2014



Data on Chalcogens Detailed by Researchers at University of Versailles (Determination of selectivity and specific area related to oxygen reduction reaction as a function of catalyst loading on non-noble metal based electrocatalyst porous ...)

By a News Reporter-Staff News Editor at Life Science Weekly -- Fresh data on Chalcogens are presented in a new report. According to news reporting from Versailles, France, by NewsRx journalists, research stated, "In a recent paper, model porous electrodes based on carbon nanotube and platinum organically grafted electrocatalysts were used to establish the determination of a specific surface area related to oxygen reduction reaction (ORR) in HClO4 1 M, using cyclic voltammetry as a function of scan speed. Identical behavior was found for the trends of this parameter called S-AO(2) and the selectivity of the ORR as a function of catalyst loading, for different model porous electrode structures."

The news correspondents obtained a quote from the research from the University of Versailles, "In the present paper, we report such a study on porous electrodes based on non-noble metal electrocatalysts built from nitrogen doped carbon nanotubes (N-CNT). The trends observed for S-AO(2) and the selectivity of the ORR as a function of N-CNT loading are exactly the same as those observed for model porous electrodes. This suggests the interest of these approaches and in particular the determination of the S-AO(2) parameter for the comparison of potentialities of different non-noble electrocatalysts, for example based on nitrogen doped carbon structures towards the ORR. Indeed, although the amount of chemical species supposed to be responsible for the ORR can be estimated using various methods, their accessibility at the level of the nano-object itself and more globally in the porous structure of an active layer is essentially unknown."

According to the news reporters, the research concluded: "The S-AO(2) parameter value is presumably directly related to the active sites which are accessible to the oxygen reduction in a porous structure."

For more information on this research see: Determination of selectivity and specific area related to oxygen reduction reaction as a function of catalyst loading on non-noble metal based electrocatalyst porous electrodes: an example on nitrogen doped carbon nanotube. Electrochimica Acta, 2014;135():293-300. Electrochimica Acta can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England (see also Chalcogens).

Our news journalists report that additional information may be obtained by contacting X. Cheng, Univ Versailles St Quentin, UMR CNRS 8180, ILV, Inst Lavoisier, F-78035 Versailles, France. Additional authors for this research include X.T. Than, M. Pinault, M. Mayne, C. Reynaud, J. Vigneron, A. Etcheberry and H. Perez.

Keywords for this news article include: France, Europe, Nitrogen, Versailles, Chalcogens, Fullerenes, Carbon Nanotubes

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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