Lijun Ni, Wei Tan*, Bifeng Zhang, Qi Zhang, Jing Xu, Ying Zhang, Chengsi Pan, Yongfa Zhu, Fudong Liu and Yang Lou*,
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Thiourea Modification Promoting the Activity on Pt/CeO2 for CO Oxidation by Weakening the Metal–Support Interaction
Supported metal catalysts play a vital role in the chemical industry; however, ensuring high activity while maintaining high stability remains a significant challenge. Herein, a strategy for modulating the metal–support interactions (MSIs) in CeO2-supported Pt-based catalyst via doping N into ceria using thiourea as a dopant (Pt/TA-CeO2) is proposed, through which excellent low-temperature CO oxidation activity and recycling stability are achieved simultaneously. Experimental characterization results demonstrate that the introduction of thiourea properly alters the structural defects and electronic state of Pt in the Pt/TA-CeO2 catalyst, thereby weakening the metal–support interaction. As a result, the complete conversion temperature of Pt/TA-CeO2 decreases from 200 to 150 °C while still maintaining high activity after 11 cycles of CO oxidation. This work offers valuable insights into modulating the catalytic capability in essential reactions by regulating the metal–support interactions in supported metal catalysts.
期刊介绍：
ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.
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