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The metal‐supported CeO2 catalysts (such as Pt/CeO2) have been considered as the most promising exhaust‐treatment catalyst to meet the future emission standard. However, the Pt‐O‐Ce interface on Pt/CeO2 system seems to over‐stabilize the Pt sites to cause low activity for CO oxidation. In this work, by adding Fe oxides, the enhanced Pt‐FeOx interaction was formed with the disappearance of the Pt‐O‐Ce...
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