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Constructing Supported Metallic Pt Single Atoms in Molten NaAlCl4
Wenping Sun1, Wei Guo1, Han Su2
1School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, P.R. China.
Angewandte Chemie (International Ed. in English)
|May 22, 2025
Summary
Researchers developed metallic platinum single-atom catalysts (SACs) on ceria supports. This breakthrough overcomes challenges in achieving metallic states for SACs, enhancing their catalytic efficiency.
Area of Science:
- Heterogeneous Catalysis
- Materials Science
- Nanotechnology
Background:
- Supported single-atom catalysts (SACs) offer high atomic utilization efficiency but often feature oxidized metal centers.
- Achieving metallic state-dominated SACs is challenging due to metal-support interactions favoring higher oxidation states.
Purpose of the Study:
- To construct a novel configuration of metallic platinum single atoms (Pt0) on a ceria (CeO2) support.
- To overcome the challenge of achieving metallic states in SACs for enhanced catalytic performance.
Main Methods:
- Synthesis of Pt SACs on CeO2 support using a molten NaAlCl4 environment.
- Introduction of localized Pt-Ce metal-metal coordination at the interface.
- Characterization of the electronic state and coordination environment of Pt atoms.
Main Results:
- Successfully anchored metallic Pt single atoms (Pt0) on the CeO2 support.
- Established extensive Pt-Ce bonding and significant electron transfer from CeO2 to Pt atoms.
- Confirmed the metallic nature of the isolated Pt atoms, overcoming previous limitations.
Conclusions:
- A new strategy for constructing metallic single-atom catalysts has been developed.
- The Pt-Ce metal-metal coordination and electron transfer are key to stabilizing metallic Pt SACs.
- This work expands the scope of SACs chemistry and offers a pathway for designing advanced catalysts.
Keywords:
Heterogeneous catalystsInterface chemistryMetallic single atomsMetal–support interactionMolten saltMore Related Videos
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