The news reporters obtained a quote from the research from Karl-Franzens-University, "At 300 K the Co-NP oxidation rate is fast and does not depend significantly on the particles size. In contrast, at 470 K an apparent NP size dependence is observed, which is caused by the thermally activated penetration of oxygen through the alumina film and the preferential oxidation of Al atoms at the Ni3Al(111)/
According to the news reporters, the research concluded: "The changes in the Co and Al oxidation rates with the particle size at 470 K have been attributed to the variation of the surface morphology with the Co coverage."
For more information on this research see: Alumina-Supported Array of Co Nanoparticles: Size-Dependent Oxidation Kinetics?
Our news correspondents report that additional information may be obtained by contacting A. Chaudhury,
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