General synthesis of neighboring dual-atomic sites with a specific pre-designed distance via an interfacial-fixing strategy
Abstract A potential non-precious metal catalyst for oxygen reduction reaction should contain metal-N4 moieties. However, most of the current strategies to regulate the distances between neighboring metal sites are not pre-designed but depend on the probability by tuning the metal loading or the sup...
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| Format: | Article |
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-55630-y |
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| author | Yan Yan Rui Yu Mingkai Liu Zehua Qu Jifeng Yang Siyuan He Hongliang Li Jie Zeng |
| author_facet | Yan Yan Rui Yu Mingkai Liu Zehua Qu Jifeng Yang Siyuan He Hongliang Li Jie Zeng |
| author_sort | Yan Yan |
| collection | DOAJ |
| description | Abstract A potential non-precious metal catalyst for oxygen reduction reaction should contain metal-N4 moieties. However, most of the current strategies to regulate the distances between neighboring metal sites are not pre-designed but depend on the probability by tuning the metal loading or the support. Herein, we report a general method for the synthesis of neighboring metal-Nx moieties (metal = Fe, Cu, Co, Ni, Zn, and Mn) via an interfacial-fixing strategy. Specifically, polydopamine is used to coat nanotemplates made of metal oxides, followed by pyrolysis to form a metal-oxide skeleton coated by rich nitrogen-doped carbon shells. After chemically etching the skeleton, only interfacial metal atoms strongly bonded with the support via nitrogen atoms are retained. The high purity (>95%) of dual Fe sites was confirmed by both the direct visualization of local regions and the indirect evidence of the averaged information. When these neighboring metal-Nx moieties are applied for oxygen reduction reaction, Fe-Nx moieties exhibit the superior activity, even outperforming commercial Pt/C in the aspects of the half-wave potential, methanol tolerance, carbon monoxide tolerance, and robustness. |
| format | Article |
| id | doaj-art-3c6bba58889144f3bb67f30922b66ca5 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
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| series | Nature Communications |
| spelling | doaj-art-3c6bba58889144f3bb67f30922b66ca52025-01-05T12:38:42ZengNature PortfolioNature Communications2041-17232025-01-0116111310.1038/s41467-024-55630-yGeneral synthesis of neighboring dual-atomic sites with a specific pre-designed distance via an interfacial-fixing strategyYan Yan0Rui Yu1Mingkai Liu2Zehua Qu3Jifeng Yang4Siyuan He5Hongliang Li6Jie Zeng7Anhui University of TechnologyAnhui University of TechnologyAnhui University of TechnologyState Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan UniversityAnhui University of TechnologyAnhui University of TechnologyHefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of ChinaAnhui University of TechnologyAbstract A potential non-precious metal catalyst for oxygen reduction reaction should contain metal-N4 moieties. However, most of the current strategies to regulate the distances between neighboring metal sites are not pre-designed but depend on the probability by tuning the metal loading or the support. Herein, we report a general method for the synthesis of neighboring metal-Nx moieties (metal = Fe, Cu, Co, Ni, Zn, and Mn) via an interfacial-fixing strategy. Specifically, polydopamine is used to coat nanotemplates made of metal oxides, followed by pyrolysis to form a metal-oxide skeleton coated by rich nitrogen-doped carbon shells. After chemically etching the skeleton, only interfacial metal atoms strongly bonded with the support via nitrogen atoms are retained. The high purity (>95%) of dual Fe sites was confirmed by both the direct visualization of local regions and the indirect evidence of the averaged information. When these neighboring metal-Nx moieties are applied for oxygen reduction reaction, Fe-Nx moieties exhibit the superior activity, even outperforming commercial Pt/C in the aspects of the half-wave potential, methanol tolerance, carbon monoxide tolerance, and robustness.https://doi.org/10.1038/s41467-024-55630-y |
| spellingShingle | Yan Yan Rui Yu Mingkai Liu Zehua Qu Jifeng Yang Siyuan He Hongliang Li Jie Zeng General synthesis of neighboring dual-atomic sites with a specific pre-designed distance via an interfacial-fixing strategy Nature Communications |
| title | General synthesis of neighboring dual-atomic sites with a specific pre-designed distance via an interfacial-fixing strategy |
| title_full | General synthesis of neighboring dual-atomic sites with a specific pre-designed distance via an interfacial-fixing strategy |
| title_fullStr | General synthesis of neighboring dual-atomic sites with a specific pre-designed distance via an interfacial-fixing strategy |
| title_full_unstemmed | General synthesis of neighboring dual-atomic sites with a specific pre-designed distance via an interfacial-fixing strategy |
| title_short | General synthesis of neighboring dual-atomic sites with a specific pre-designed distance via an interfacial-fixing strategy |
| title_sort | general synthesis of neighboring dual atomic sites with a specific pre designed distance via an interfacial fixing strategy |
| url | https://doi.org/10.1038/s41467-024-55630-y |
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