Pd-Decorated Cu2O-Ag Catalyst Promoting CO2 Electroreduction to C2H4 by Optimizing CO Intermediate Adsorption and Hydrogenation
Electrocatalytic CO2 reduction reaction (CO2RR) to high value-added products, such as ethylene (C2H4), offers a promising approach to achieve carbon neutrality. Although recent studies have reported that a tandem catalyst (for example, Cu-Ag systems) exhibits advantage in C2H4 production, its practical application is largely inhibited by the following: (1) a traditional tandem catalyst cannot effectively stabilize the *CO intermediate, resulting in sluggish C-C coupling, and (2) inadequate H2O activation ability hinders the hydrogenation of intermediates. To break through the above bottleneck, herein, palladium (Pd) was introduced into Cu2O-Ag, a typical conventional tandem catalyst, to construct a Cu2O-Pd-Ag ternary catalyst. Extensive experiment and density functional theory calculation prove that Pd can efficiently stabilize the *CO intermediate and promote the H2O activation, which contributes to the C-C coupling and intermediate hydrogenation, the key steps in the conversion of CO2 to C2H4. Beneficial to the efficient synergy of Cu2O, Pd, and Ag, the optimal Cu2O-Pd-Ag ternary catalyst achieves CO2RR toward C2H4 with a faradaic efficiency of 63.2% at -1.2 VRHE, which is higher than that achieved by Cu2O-Ag and most of other reported catalysts. This work is a fruitful exploration of a rare ternary catalyst, providing a new route for constructing an efficient CO2RR electrocatalyst.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:16 |
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| Enthalten in: |
ACS applied materials & interfaces - 16(2024), 13 vom: 03. Apr., Seite 16243-16252 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Xu, Xianbin [VerfasserIn] |
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| Links: |
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| Themen: |
*CO intermediate |
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| Anmerkungen: |
Date Revised 04.04.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1021/acsami.4c00472 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM370170474 |
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| 520 | |a Electrocatalytic CO2 reduction reaction (CO2RR) to high value-added products, such as ethylene (C2H4), offers a promising approach to achieve carbon neutrality. Although recent studies have reported that a tandem catalyst (for example, Cu-Ag systems) exhibits advantage in C2H4 production, its practical application is largely inhibited by the following: (1) a traditional tandem catalyst cannot effectively stabilize the *CO intermediate, resulting in sluggish C-C coupling, and (2) inadequate H2O activation ability hinders the hydrogenation of intermediates. To break through the above bottleneck, herein, palladium (Pd) was introduced into Cu2O-Ag, a typical conventional tandem catalyst, to construct a Cu2O-Pd-Ag ternary catalyst. Extensive experiment and density functional theory calculation prove that Pd can efficiently stabilize the *CO intermediate and promote the H2O activation, which contributes to the C-C coupling and intermediate hydrogenation, the key steps in the conversion of CO2 to C2H4. Beneficial to the efficient synergy of Cu2O, Pd, and Ag, the optimal Cu2O-Pd-Ag ternary catalyst achieves CO2RR toward C2H4 with a faradaic efficiency of 63.2% at -1.2 VRHE, which is higher than that achieved by Cu2O-Ag and most of other reported catalysts. This work is a fruitful exploration of a rare ternary catalyst, providing a new route for constructing an efficient CO2RR electrocatalyst | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a *CO intermediate | |
| 650 | 4 | |a C2H4 | |
| 650 | 4 | |a Cu2O–Pd–Ag ternary catalyst | |
| 650 | 4 | |a C–C coupling | |
| 650 | 4 | |a hydrogenation | |
| 700 | 1 | |a Xiao, Difei |e verfasserin |4 aut | |
| 700 | 1 | |a Gao, Yugang |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Wenbo |e verfasserin |4 aut | |
| 700 | 1 | |a Gao, Miaomiao |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Shuang |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Zeyan |e verfasserin |4 aut | |
| 700 | 1 | |a Zheng, Zhaoke |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Peng |e verfasserin |4 aut | |
| 700 | 1 | |a Cheng, Hefeng |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Yuanyuan |e verfasserin |4 aut | |
| 700 | 1 | |a Dai, Ying |e verfasserin |4 aut | |
| 700 | 1 | |a Huang, Baibiao |e verfasserin |4 aut | |
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