Steering hydrogen evolution in CO2 electroreduction through tailoring various co-catalysts
Electrochemical CO2 reduction reaction (CO2RR) is a sustainable approach to producing carbon-neutral fuels when combined with renewable energies. Besides the emphatic consideration of developing efficient catalysts, a suitable conductive carbon agent served as co-catalyst with a low activity toward...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-10-01
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| Series: | Electrochemistry Communications |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248119301948 |
| _version_ | 1818822787334144000 |
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| author | Xian-Zong Wang Subiao Liu Qingxia Liu Jing-Li Luo |
| author_facet | Xian-Zong Wang Subiao Liu Qingxia Liu Jing-Li Luo |
| author_sort | Xian-Zong Wang |
| collection | DOAJ |
| description | Electrochemical CO2 reduction reaction (CO2RR) is a sustainable approach to producing carbon-neutral fuels when combined with renewable energies. Besides the emphatic consideration of developing efficient catalysts, a suitable conductive carbon agent served as co-catalyst with a low activity toward the competitive hydrogen evolution reaction (HER), is also highly needed. However, there have been limited studies focused on the investigation of co-catalyst during CO2RR, especially on their HER behavior. We herein explored the HER of various co-catalyst, i.e., acetylene black (AB), carbon black (CB) and graphite flake (GF) as well as carbon nanotube (CNT), and their composites with sub-25 nm Ag nanowires (NWs) as catalysts. GF and CB exhibit a higher activity toward CO2RR and HER, respectively. In contrast, CB/Ag NWs achieve the highest Faraday efficiency and partial current density for CO2RR, whereas CNT/Ag NWs prefer HER. The differences in HER suggest a critical influence of co-catalyst and this study points to a better guidance on the selection of co-catalyst for CO2RR. Keywords: Carbon dioxide reduction reaction, Hydrogen evolution reaction, Carbon support material, Ag nanowires |
| first_indexed | 2024-12-18T23:29:38Z |
| format | Article |
| id | doaj.art-5a7ac40882a94cf893db74063e72e5e6 |
| institution | Directory Open Access Journal |
| issn | 1388-2481 |
| language | English |
| last_indexed | 2024-12-18T23:29:38Z |
| publishDate | 2019-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj.art-5a7ac40882a94cf893db74063e72e5e62022-12-21T20:47:43ZengElsevierElectrochemistry Communications1388-24812019-10-01107Steering hydrogen evolution in CO2 electroreduction through tailoring various co-catalystsXian-Zong Wang0Subiao Liu1Qingxia Liu2Jing-Li Luo3Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, CanadaDepartment of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, CanadaDepartment of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, CanadaCorresponding author.; Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, CanadaElectrochemical CO2 reduction reaction (CO2RR) is a sustainable approach to producing carbon-neutral fuels when combined with renewable energies. Besides the emphatic consideration of developing efficient catalysts, a suitable conductive carbon agent served as co-catalyst with a low activity toward the competitive hydrogen evolution reaction (HER), is also highly needed. However, there have been limited studies focused on the investigation of co-catalyst during CO2RR, especially on their HER behavior. We herein explored the HER of various co-catalyst, i.e., acetylene black (AB), carbon black (CB) and graphite flake (GF) as well as carbon nanotube (CNT), and their composites with sub-25 nm Ag nanowires (NWs) as catalysts. GF and CB exhibit a higher activity toward CO2RR and HER, respectively. In contrast, CB/Ag NWs achieve the highest Faraday efficiency and partial current density for CO2RR, whereas CNT/Ag NWs prefer HER. The differences in HER suggest a critical influence of co-catalyst and this study points to a better guidance on the selection of co-catalyst for CO2RR. Keywords: Carbon dioxide reduction reaction, Hydrogen evolution reaction, Carbon support material, Ag nanowireshttp://www.sciencedirect.com/science/article/pii/S1388248119301948 |
| spellingShingle | Xian-Zong Wang Subiao Liu Qingxia Liu Jing-Li Luo Steering hydrogen evolution in CO2 electroreduction through tailoring various co-catalysts Electrochemistry Communications |
| title | Steering hydrogen evolution in CO2 electroreduction through tailoring various co-catalysts |
| title_full | Steering hydrogen evolution in CO2 electroreduction through tailoring various co-catalysts |
| title_fullStr | Steering hydrogen evolution in CO2 electroreduction through tailoring various co-catalysts |
| title_full_unstemmed | Steering hydrogen evolution in CO2 electroreduction through tailoring various co-catalysts |
| title_short | Steering hydrogen evolution in CO2 electroreduction through tailoring various co-catalysts |
| title_sort | steering hydrogen evolution in co2 electroreduction through tailoring various co catalysts |
| url | http://www.sciencedirect.com/science/article/pii/S1388248119301948 |
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