Revealing Correlation of Valence State with Nanoporous Structure in Cobalt Catalyst Nanoparticles byIn SituEnvironmental TEM
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چکیده
منابع مشابه
Cobalt valence and crystal structure of La0.5Sr0.5CoO2.25
Oxygen vacancies play a key role in determining the functionality and performance of many oxide smart materials. In this paper, the crystal structure of an anion-de® cient perovskite-type orthorhombic (with a < b) phase La0.5Sr0.5CoO2.25 (or La8Sr8Co16O36) has been determined for the ® rst time with the combined use of energy-dispersive X-ray spectroscopy, electronenergy-loss spectroscopy, high...
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15 صفحه اولRevealing the Size-Dependent d-d Excitations of Cobalt Nanoparticles Using Soft X-ray Spectroscopy.
Cobalt-based catalysts are widely used to produce liquid fuels through the Fischer-Tropsch (FT) reaction. However, the cobalt nanocatalysts can exhibit intriguing size-dependent activity whose origin remains heavily debated. To shed light on this issue, the electronic structures of cobalt nanoparticles with size ranging from 4 to 10 nm are studied using soft X-ray absorption (XAS) and resonant ...
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ژورنال
عنوان ژورنال: ACS Nano
سال: 2012
ISSN: 1936-0851,1936-086X
DOI: 10.1021/nn3007652