Interfacial Regulation of Ru-Based Catalysts for the Enhanced Activity of Ammonia Decomposition
Ru-based catalysts feature an intrinsic activity toward NH3 decomposition, while their catalytic mechanism associated with the interface with support remains elusive. Herein, with the interfacial regulation of Ru catalysts by TiO2 via strong metal–support interactions (SMSI), i.e., Ru/TiO2, an enhanced activity of NH3 decomposition can be realized with a turnover frequency of hydrogen production 2-fold higher than that on Ru/SiO2. With characterizations and density functional theory calculations, the newly generated Ru/TiO2–x interface with the electron-rich Ru sites was proven to not only facilitate the adsorption of ammonia and its N–H bond cleavage but also promote the associative desorption of N* species. Moreover, the poisoning kinetics of hydrogen during reactions can also be alleviated due to the associative desorption of H* occurring primarily on the residual Ru surface. This work demonstrates that interfacial regulation provides an efficient strategy for the catalytic activity modulation of Ru-based catalysts especially in NH3 decomposition.
Authors
- Fanan Wang (ORCID: https://orcid.org/0000-0002-7891-254X)
- Guoliang Xu (ORCID: https://orcid.org/0000-0001-5660-9649)
- Xiaofeng Yang (ORCID: https://orcid.org/0000-0001-5012-5651)
- Yanqiang Huang (ORCID: https://orcid.org/0000-0002-7556-317X)
- Hongying Zhuo (ORCID: https://orcid.org/0000-0001-5049-0851)
- Guiyue Bi
- Wenjie Yan
- Hongmin Duan
- Tianyu Zhang (ORCID: https://orcid.org/0000-0002-6501-7562)
- Binglian Liang (ORCID: https://orcid.org/0000-0002-3143-0615)
- Yang Su (ORCID: https://orcid.org/0009-0002-2876-7775)
- Weijue Wang
Institutions
- University of Science and Technology of China (CN)
- Dalian Institute of Chemical Physics (CN)
- Chinese Academy of Sciences (CN)
- Beijing Forestry University (CN)
- University of Chinese Academy of Sciences (CN)
- Fujian University of Technology (CN)
Publication Details
- Journal
- ACS Sustainable Chemistry & Engineering
- Published
- 2024-08-29
- DOI
- https://doi.org/10.1021/acssuschemeng.4c03829
- Citations
- 34
- Primary Topic
- Ammonia Synthesis and Nitrogen Reduction
- Type
- article
- Field-Weighted Citation Impact
- 3.63
Funders
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- China Postdoctoral Science Foundation
- Youth Innovation Promotion Association of the Chinese Academy of Sciences
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- National Key Research and Development Program of China