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Control of transition metal-oxygen bond strength boosts the redox ex-solution in a perovskite oxide surface
We demonstrate theoretically and experimentally that engineering of cation-oxygen bond strength in a perovskite structure can control redox ex-solution of B-site metals and thus the formation of metal nanoparticles at the oxide surface upon high-temperature reduction. In particular, we show that lar...
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Published in: | Energy & environmental science 2020-10, Vol.13 (1), p.344-3411 |
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Main Authors: | , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | We demonstrate theoretically and experimentally that engineering of cation-oxygen bond strength in a perovskite structure can control redox ex-solution of B-site metals and thus the formation of metal nanoparticles at the oxide surface upon high-temperature reduction. In particular, we show that large isovalent doping significantly promotes the B-site ex-solution
via
tuning of the cation-oxygen bond strength, leading to high catalytic activity of CO oxidation. This method to promote ex-solution can be readily applied to various heterogeneous catalysts.
Tuning of the cation-oxygen bond strength effectively promotes B-site ex-solution in a perovskite, thereby boosting the catalytic activity of CO oxidation. |
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ISSN: | 1754-5692 1754-5706 |
DOI: | 10.1039/d0ee01308k |