Cu-Sn Aerogels for Electrochemical CO<sub>2</sub> Reduction with High CO Selectivity
This work reports the synthesis of Cu<sub>x</sub>Sn<sub>y</sub> alloy aerogels for electrochemical CO<sub>2</sub> reduction catalysts. An in situ reduction and the subsequent freeze-drying process can successfully give CnxSny aerogels with tuneable Sn contents, an...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/3/1033 |
| _version_ | 1797623759490777088 |
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| author | Yexin Pan Muchen Wu Ziran Ye Haibin Tang Zhanglian Hong Mingjia Zhi |
| author_facet | Yexin Pan Muchen Wu Ziran Ye Haibin Tang Zhanglian Hong Mingjia Zhi |
| author_sort | Yexin Pan |
| collection | DOAJ |
| description | This work reports the synthesis of Cu<sub>x</sub>Sn<sub>y</sub> alloy aerogels for electrochemical CO<sub>2</sub> reduction catalysts. An in situ reduction and the subsequent freeze-drying process can successfully give CnxSny aerogels with tuneable Sn contents, and such aerogels are composed of three-dimensional architectures made from inter-connected fine nanoparticles with pores as the channels. Density functional theory (DFT) calculations show that the introduction of Sn in Cu aerogels inhibits H<sub>2</sub> evolution reaction (HER) activity, while the accelerated CO desorption on the catalyst surface is found at the same time. The porous structure of aerogel also favors exposing more active sites. Counting these together, with the optimized composition of Cu<sub>95</sub>Sn<sub>5</sub> aerogel, the high selectivity of CO can be achieved with a faradaic efficiency of over 90% in a wide potential range (−0.7 V to −1.0 V vs. RHE). |
| first_indexed | 2024-03-11T09:33:19Z |
| format | Article |
| id | doaj.art-588e4d2bb7a0477c8ae413644756ad64 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T09:33:19Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-588e4d2bb7a0477c8ae413644756ad642023-11-16T17:26:42ZengMDPI AGMolecules1420-30492023-01-01283103310.3390/molecules28031033Cu-Sn Aerogels for Electrochemical CO<sub>2</sub> Reduction with High CO SelectivityYexin Pan0Muchen Wu1Ziran Ye2Haibin Tang3Zhanglian Hong4Mingjia Zhi5State Key Laboratory of Silicon Material, School of Materials Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, ChinaState Key Laboratory of Silicon Material, School of Materials Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, ChinaDepartment of Applied Physics, Zhejiang University of Technology, Hangzhou 310014, ChinaKey Laboratory of Materials Physics, and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Hefei Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, ChinaState Key Laboratory of Silicon Material, School of Materials Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, ChinaInstitute for Composites Science Innovation (InCSI), Zhejiang University, 38 Zheda Road, Hangzhou 310027, ChinaThis work reports the synthesis of Cu<sub>x</sub>Sn<sub>y</sub> alloy aerogels for electrochemical CO<sub>2</sub> reduction catalysts. An in situ reduction and the subsequent freeze-drying process can successfully give CnxSny aerogels with tuneable Sn contents, and such aerogels are composed of three-dimensional architectures made from inter-connected fine nanoparticles with pores as the channels. Density functional theory (DFT) calculations show that the introduction of Sn in Cu aerogels inhibits H<sub>2</sub> evolution reaction (HER) activity, while the accelerated CO desorption on the catalyst surface is found at the same time. The porous structure of aerogel also favors exposing more active sites. Counting these together, with the optimized composition of Cu<sub>95</sub>Sn<sub>5</sub> aerogel, the high selectivity of CO can be achieved with a faradaic efficiency of over 90% in a wide potential range (−0.7 V to −1.0 V vs. RHE).https://www.mdpi.com/1420-3049/28/3/1033alloyaerogelCO<sub>2</sub> reductionCO selectivity |
| spellingShingle | Yexin Pan Muchen Wu Ziran Ye Haibin Tang Zhanglian Hong Mingjia Zhi Cu-Sn Aerogels for Electrochemical CO<sub>2</sub> Reduction with High CO Selectivity Molecules alloy aerogel CO<sub>2</sub> reduction CO selectivity |
| title | Cu-Sn Aerogels for Electrochemical CO<sub>2</sub> Reduction with High CO Selectivity |
| title_full | Cu-Sn Aerogels for Electrochemical CO<sub>2</sub> Reduction with High CO Selectivity |
| title_fullStr | Cu-Sn Aerogels for Electrochemical CO<sub>2</sub> Reduction with High CO Selectivity |
| title_full_unstemmed | Cu-Sn Aerogels for Electrochemical CO<sub>2</sub> Reduction with High CO Selectivity |
| title_short | Cu-Sn Aerogels for Electrochemical CO<sub>2</sub> Reduction with High CO Selectivity |
| title_sort | cu sn aerogels for electrochemical co sub 2 sub reduction with high co selectivity |
| topic | alloy aerogel CO<sub>2</sub> reduction CO selectivity |
| url | https://www.mdpi.com/1420-3049/28/3/1033 |
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