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Studies in the Area of Chalcogens Reported from University of Bremen (PtxCo1-x alloy NPs prepared by colloidal tool-box synthesis: The effect of...

July 8, 2014



Studies in the Area of Chalcogens Reported from University of Bremen (PtxCo1-x alloy NPs prepared by colloidal tool-box synthesis: The effect of de-alloying on the oxygen reduction reaction activity)

By a News Reporter-Staff News Editor at Life Science Weekly -- Researchers detail new data in Chalcogens. According to news reporting originating from Bremen, Germany, by NewsRx correspondents, research stated, "In the presented work we investigate the influence of de-alloying carbon supported PtxCo1-x alloy nanoparticles (NPs) on their oxygen reduction reaction (ORR) activity. In our study we used a modification of a recently developed colloidal synthesis approach in order to prepare NPs of similar size, i.e. around 2 nm in diameter, but varying initial Pt:Co ratios."

Our news editors obtained a quote from the research from the University of Bremen, "The results show that using a surfactant is favorable to control the initial Pt:Co ratio. The initial composition of the catalyst however is lost upon introduction into an acid environment, i.e. the well-known effect of chemical de-alloying occurs. Interestingly, despite the fact that due to de-alloying almost all Co is removed from the PtxCo1-x NPs, a clear trend of increasing ORR activity with increasing initial Co content is observed."

According to the news editors, the research concluded: "The results indicate that the process of chemical de-alloying is favorable for producing active ORB. catalysts."

For more information on this research see: PtxCo1-x alloy NPs prepared by colloidal tool-box synthesis: The effect of de-alloying on the oxygen reduction reaction activity. International Journal of Hydrogen Energy, 2014;39(17):9143-9148. International Journal of Hydrogen Energy can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; International Journal of Hydrogen Energy - www.elsevier.com/wps/product/cws_home/485)

The news editors report that additional information may be obtained by contacting I. Spanos, University of Bremen, Inst Appl & Phys Chem, D-28359 Bremen, Germany. Additional authors for this research include C.P. Rellan, L. Altmann, M. Baumer and M. Arenz (see also Chalcogens).

Keywords for this news article include: Bremen, Europe, Germany, Chalcogens

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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