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Investigators from Technical University Release New Data on Chalcogens (Electrocatalytic Oxygen Evolution on Iridium Oxide: Uncovering...

September 9, 2014



Investigators from Technical University Release New Data on Chalcogens (Electrocatalytic Oxygen Evolution on Iridium Oxide: Uncovering Catalyst-Substrate Interactions and Active Iridium Oxide Species)

By a News Reporter-Staff News Editor at Life Science Weekly -- Current study results on Chalcogens have been published. According to news reporting originating in Berlin, Germany, by NewsRx journalists, research stated, "The morphology, crystallinity, and chemical state of well-defined Ir oxide nanoscale thin-film catalysts prepared on Ti substrates at various calcination temperatures were investigated. Special emphasis was placed on the calcination temperature-dependent interaction between Ir oxide film and Ti substrate and its impact on the electrocatalytic oxygen evolution reaction (OER) activity."

The news reporters obtained a quote from the research from Technical University, "The Ir oxide films were characterized by scanning electron microscopy, transmission electron microscopy, scanning transmission electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy and cyclic voltammetry. Furthermore, temperature programmed reduction was applied to study the Ir oxide species formed as a function of calcination temperature and its interaction with the Ti substrate. A previously unachieved correlation between the electrocatalytic OER activity and the nature and structural properties of the Ir oxide film was established. We find that the crystalline high temperature Ir oxide species is detrimental, whereas low temperature amorphous Ir oxy-hydroxides are highly active and efficient catalysts for the OER."

According to the news reporters, the research concluded: "Moreover, at the highest applied calcination temperature (550 degrees C), Ti oxides, originating from the substrate, strongly affect chemical state and electrocatalytic OER activity of the Ir oxide film."

For more information on this research see: Electrocatalytic Oxygen Evolution on Iridium Oxide: Uncovering Catalyst-Substrate Interactions and Active Iridium Oxide Species. Journal of the Electrochemical Society, 2014;161(9):F876-F882. Journal of the Electrochemical Society can be contacted at: Electrochemical Soc Inc, 65 South Main Street, Pennington, NJ 08534, USA. (The Electrochemical Society - ecsdl.org/; Journal of the Electrochemical Society - www.ecsdl.org/JES)

Our news correspondents report that additional information may be obtained by contacting T. Reier, Technical University of Berlin, D-10623 Berlin, Germany. Additional authors for this research include D. Teschner, T. Lunkenbein, A. Bergmann, S. Selve, R. Kraehnert, R. Schlogl and P. Strasser (see also Chalcogens).

Keywords for this news article include: Berlin, Germany, Europe, Chalcogens, Iridium, Transition Elements

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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