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Characterization of cobalt in CoPt nanocatalysts in oxidation-reduction conditions.

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Recently, researchers from the University of Pennsylvania, Stony Brook University, Harvard University, and Brookhaven National Laboratory conducted an in situ TEM study using Hummingbird Scientific’s in-situ TEM Gas Heating holder system to characterize Co₂Pt₃ nanoparticles supported on carbon. They studied the dynamical restructuring effects at the atomic scale of these catalysts during in-situ oxidation and reduction.

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With Improved high accuracy EDS mapping with less background at the highest temperatures, Hummingbird Scientific’s in-situ TEM Gas Heating holder also minimizes drift to the point that one can collect data without drift-correction.

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The work presented here using the Gas Cell TEM holder shows a unique methodology to perform controlled monitoring of high-temperature corrosion processes and the ambient conditions.

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Reference:

Alexandre C. Foucher, Nicholas Marcella, Jennifer D. Lee, Daniel J. Rosen, Ryan Tappero, Christopher B. Murray, Anatoly I. Frenkel, and Eric A. Stach “Structural and Valence State Modification of Cobalt in CoPt Nanocatalysts in Redox Conditions”