Single-Atom Ru Alloyed with Ni Nanoparticles Boosts CO2 Methanation
© 2023 Wiley‐VCH GmbH..
Designing catalysts to proceed with catalytic reactions along the desired reaction pathways, e.g., CO2 methanation, has received much attention but remains a huge challenge. This work reports one Ru1Ni single-atom alloy (SAA) catalyst (Ru1Ni/SiO2) prepared via a galvanic replacement reaction between RuCl3 and Ni nanoparticles (NPs) derived from the reduction of Ni phyllosilicate (Ni-ph). Ru1Ni/SiO2 achieved much improved selectivity toward hydrogenation of CO2 to CH4 and catalytic activity (Turnover frequency (TOF) value: 40.00 × 10-3 s-1), much higher than those of Ni/SiO2 (TOF value: 4.40 × 10-3 s-1) and most reported Ni-based catalysts (TOF value: 1.03 × 10-3-11.00 × 10-3 s-1). Experimental studies verify that Ru single atoms are anchored onto the Ni NPs surface via the Ru1-Ni coordination accompanied by electron transfer from Ru1 to Ni. Both in situ experiments and theoretical calculations confirm that the interface sites of Ru1Ni-SAA are the intrinsic active sites, which promote the direct dissociation of CO2 and lower the energy barrier for the hydrogenation of CO* intermediate, thereby directing and enhancing the CO2 hydrogenation to CH4.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:20 |
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| Enthalten in: |
Small (Weinheim an der Bergstrasse, Germany) - 20(2024), 12 vom: 18. März, Seite e2308193 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Zhang, Tengfei [VerfasserIn] |
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| Links: |
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| Themen: |
CO2 methanation |
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| Anmerkungen: |
Date Revised 23.03.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1002/smll.202308193 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a Designing catalysts to proceed with catalytic reactions along the desired reaction pathways, e.g., CO2 methanation, has received much attention but remains a huge challenge. This work reports one Ru1Ni single-atom alloy (SAA) catalyst (Ru1Ni/SiO2) prepared via a galvanic replacement reaction between RuCl3 and Ni nanoparticles (NPs) derived from the reduction of Ni phyllosilicate (Ni-ph). Ru1Ni/SiO2 achieved much improved selectivity toward hydrogenation of CO2 to CH4 and catalytic activity (Turnover frequency (TOF) value: 40.00 × 10-3 s-1), much higher than those of Ni/SiO2 (TOF value: 4.40 × 10-3 s-1) and most reported Ni-based catalysts (TOF value: 1.03 × 10-3-11.00 × 10-3 s-1). Experimental studies verify that Ru single atoms are anchored onto the Ni NPs surface via the Ru1-Ni coordination accompanied by electron transfer from Ru1 to Ni. Both in situ experiments and theoretical calculations confirm that the interface sites of Ru1Ni-SAA are the intrinsic active sites, which promote the direct dissociation of CO2 and lower the energy barrier for the hydrogenation of CO* intermediate, thereby directing and enhancing the CO2 hydrogenation to CH4 | ||
| 650 | 4 | |a Journal Article | |
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| 700 | 1 | |a Zheng, Peng |e verfasserin |4 aut | |
| 700 | 1 | |a Gao, Jiajian |e verfasserin |4 aut | |
| 700 | 1 | |a Han, Zhennan |e verfasserin |4 aut | |
| 700 | 1 | |a Gu, Fangna |e verfasserin |4 aut | |
| 700 | 1 | |a Xu, Wenqing |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Lina |e verfasserin |4 aut | |
| 700 | 1 | |a Zhu, Tingyu |e verfasserin |4 aut | |
| 700 | 1 | |a Zhong, Ziyi |e verfasserin |4 aut | |
| 700 | 1 | |a Xu, Guangwen |e verfasserin |4 aut | |
| 700 | 1 | |a Su, Fabing |e verfasserin |4 aut | |
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