Pt-Sn alloy shells with tunable composition and structure on Au nanoparticles for boosting ethanol oxidation
Combining the core-shell structure with the optimization of surface composition and structure in the shell is a fantastic strategy to enhance the electrocatalytic performances. Here, we synthesized trimetallic Au@PtxSny core-shell nanoparticles (NPs) with tunable composition and structure of Pt-Sn a...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-08-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fchem.2022.993894/full |
| _version_ | 1811285661678829568 |
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| author | Ningkang Qian Liang Ji Xiao Li Jingbo Huang Junjie Li Xingqiao Wu Xingqiao Wu Deren Yang Hui Zhang Hui Zhang |
| author_facet | Ningkang Qian Liang Ji Xiao Li Jingbo Huang Junjie Li Xingqiao Wu Xingqiao Wu Deren Yang Hui Zhang Hui Zhang |
| author_sort | Ningkang Qian |
| collection | DOAJ |
| description | Combining the core-shell structure with the optimization of surface composition and structure in the shell is a fantastic strategy to enhance the electrocatalytic performances. Here, we synthesized trimetallic Au@PtxSny core-shell nanoparticles (NPs) with tunable composition and structure of Pt-Sn alloyed shells. Impressively, the Au@PtSn core-shell NPs with hexagonal PtSn alloyed shells exhibited the highest mass activity and specific activity toward ethanol oxidation reaction (EOR) in alkaline electrolyte, which are 13.0 and 12.7 times higher than those of the commercial Pt/C. In addition, the Au@PtSn core-shell NPs displayed the best stability compared to commercial Pt/C, with only 44.8% loss vs. 86.8% loss in mass activity after 1,000 s due to the stronger anti-poisoning ability for reaction intermediates. The theory calculations reveal that the introduction of Au core and alloying Pt with Sn both endow Pt with an appropriate d-band center, and thus effectively boosting the EOR activity. |
| first_indexed | 2024-04-13T02:48:23Z |
| format | Article |
| id | doaj.art-2a45b2f1ae0d452b82b227ac429abc89 |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-04-13T02:48:23Z |
| publishDate | 2022-08-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-2a45b2f1ae0d452b82b227ac429abc892022-12-22T03:05:56ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462022-08-011010.3389/fchem.2022.993894993894Pt-Sn alloy shells with tunable composition and structure on Au nanoparticles for boosting ethanol oxidationNingkang Qian0Liang Ji1Xiao Li2Jingbo Huang3Junjie Li4Xingqiao Wu5Xingqiao Wu6Deren Yang7Hui Zhang8Hui Zhang9State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, ChinaState Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, ChinaState Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, ChinaState Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, ChinaState Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, ChinaState Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, ChinaInstitute for Carbon Neutralization, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang, ChinaState Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, ChinaState Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, ChinaZhejiang Provincial Key Laboratory of Power Semiconductor Materials and Devices, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, Zhejiang, ChinaCombining the core-shell structure with the optimization of surface composition and structure in the shell is a fantastic strategy to enhance the electrocatalytic performances. Here, we synthesized trimetallic Au@PtxSny core-shell nanoparticles (NPs) with tunable composition and structure of Pt-Sn alloyed shells. Impressively, the Au@PtSn core-shell NPs with hexagonal PtSn alloyed shells exhibited the highest mass activity and specific activity toward ethanol oxidation reaction (EOR) in alkaline electrolyte, which are 13.0 and 12.7 times higher than those of the commercial Pt/C. In addition, the Au@PtSn core-shell NPs displayed the best stability compared to commercial Pt/C, with only 44.8% loss vs. 86.8% loss in mass activity after 1,000 s due to the stronger anti-poisoning ability for reaction intermediates. The theory calculations reveal that the introduction of Au core and alloying Pt with Sn both endow Pt with an appropriate d-band center, and thus effectively boosting the EOR activity.https://www.frontiersin.org/articles/10.3389/fchem.2022.993894/fullcore−shellAuPtSntunable composition and structuretrimetallicnanoparticlesethanol oxidation |
| spellingShingle | Ningkang Qian Liang Ji Xiao Li Jingbo Huang Junjie Li Xingqiao Wu Xingqiao Wu Deren Yang Hui Zhang Hui Zhang Pt-Sn alloy shells with tunable composition and structure on Au nanoparticles for boosting ethanol oxidation Frontiers in Chemistry core−shell AuPtSn tunable composition and structure trimetallic nanoparticles ethanol oxidation |
| title | Pt-Sn alloy shells with tunable composition and structure on Au nanoparticles for boosting ethanol oxidation |
| title_full | Pt-Sn alloy shells with tunable composition and structure on Au nanoparticles for boosting ethanol oxidation |
| title_fullStr | Pt-Sn alloy shells with tunable composition and structure on Au nanoparticles for boosting ethanol oxidation |
| title_full_unstemmed | Pt-Sn alloy shells with tunable composition and structure on Au nanoparticles for boosting ethanol oxidation |
| title_short | Pt-Sn alloy shells with tunable composition and structure on Au nanoparticles for boosting ethanol oxidation |
| title_sort | pt sn alloy shells with tunable composition and structure on au nanoparticles for boosting ethanol oxidation |
| topic | core−shell AuPtSn tunable composition and structure trimetallic nanoparticles ethanol oxidation |
| url | https://www.frontiersin.org/articles/10.3389/fchem.2022.993894/full |
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