Thiourea Modification Promoting the Activity on Pt/CeO<sub>2</sub> 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.
Authors
- Lijun Ni
- Yongfa Zhu (ORCID: https://orcid.org/0000-0001-8528-509X)
- Yang Lou (ORCID: https://orcid.org/0000-0002-8310-8150)
- Wei Tan (ORCID: https://orcid.org/0000-0002-1481-9346)
- Bifeng Zhang
- Fudong Liu (ORCID: https://orcid.org/0000-0001-8771-5938)
- Chengsi Pan (ORCID: https://orcid.org/0000-0002-1624-4259)
- Jing Xu (ORCID: https://orcid.org/0000-0001-5558-6908)
- Qi Zhang (ORCID: https://orcid.org/0000-0001-7500-5496)
- Ying Zhang (ORCID: https://orcid.org/0000-0002-6910-273X)
Institutions
- University of California, Riverside (US)
- Jiangnan University (CN)
- Ministry of Education of the People's Republic of China (CN)
- University of California System (US)
- State Key Laboratory of Pollution Control and Resource Reuse (CN)
- Nanjing University (CN)
- Tsinghua University (CN)
Publication Details
- Journal
- Industrial & Engineering Chemistry Research
- Published
- 2025-02-22
- DOI
- https://doi.org/10.1021/acs.iecr.4c04820
- Citations
- 5
- Primary Topic
- Catalytic Processes in Materials Science
- Type
- article
- Field-Weighted Citation Impact
- 2.59
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Jiangsu Province
- Jiangsu Provincial Department of Education
- University of California, Riverside
- National Key Research and Development Program of China