Sodium Persulfate Pre‐treatment of Copper Foils Enabling Homogenous Growth of Cu(OH)2 Nanoneedle Films for Electrochemical CO2 Reduction
Abstract Oxide‐derived copper (OD−Cu) catalysts have received widespread attention for their ability to produce energy‐dense multicarbon products. Within this class of materials, nanostructured copper hydroxide (Cu(OH)2) has shown excellent catalytic properties, but its synthesis requires complex pr...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2022-10-01
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| Series: | ChemistryOpen |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/open.202200133 |
| _version_ | 1811234679020322816 |
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| author | Kim Robert Gustavsen Prof. Dr. Erik Andrew Johannessen Prof. Dr. Kaiying Wang |
| author_facet | Kim Robert Gustavsen Prof. Dr. Erik Andrew Johannessen Prof. Dr. Kaiying Wang |
| author_sort | Kim Robert Gustavsen |
| collection | DOAJ |
| description | Abstract Oxide‐derived copper (OD−Cu) catalysts have received widespread attention for their ability to produce energy‐dense multicarbon products. Within this class of materials, nanostructured copper hydroxide (Cu(OH)2) has shown excellent catalytic properties, but its synthesis requires complex pre‐treatment steps of the Cu surface. In this study, we have developed a simple two‐step synthesis method for homogenous Cu(OH)2 nanoneedle films using a sodium persulfate pre‐treatment step prior to anodization. The Cu(OH)2 nanoneedle films show drastically enhanced uniformity after the pre‐treatment due to improved current distribution and can be grown over large surface areas (63 cm2). As a catalyst for CO2 reduction, the Cu(OH)2 favours ethylene formation, with a near total suppression of methane production. A peak faradaic efficiency (FE) of 36.5 % is found at −1.0 V vs. the reversible hydrogen electrode (RHE), and the catalyst remains stable while providing an ethylene to methane ratio of 27.8 after 6 h of reaction. |
| first_indexed | 2024-04-12T11:40:49Z |
| format | Article |
| id | doaj.art-699c39ac6e3446d4bc9518ee98625f8a |
| institution | Directory Open Access Journal |
| issn | 2191-1363 |
| language | English |
| last_indexed | 2024-04-12T11:40:49Z |
| publishDate | 2022-10-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | ChemistryOpen |
| spelling | doaj.art-699c39ac6e3446d4bc9518ee98625f8a2022-12-22T03:34:39ZengWiley-VCHChemistryOpen2191-13632022-10-011110n/an/a10.1002/open.202200133Sodium Persulfate Pre‐treatment of Copper Foils Enabling Homogenous Growth of Cu(OH)2 Nanoneedle Films for Electrochemical CO2 ReductionKim Robert Gustavsen0Prof. Dr. Erik Andrew Johannessen1Prof. Dr. Kaiying Wang2Department of Microsystems University of South-Eastern Norway Raveien 205 3184 Horten NorwayDepartment of Microsystems University of South-Eastern Norway Raveien 205 3184 Horten NorwayDepartment of Microsystems University of South-Eastern Norway Raveien 205 3184 Horten NorwayAbstract Oxide‐derived copper (OD−Cu) catalysts have received widespread attention for their ability to produce energy‐dense multicarbon products. Within this class of materials, nanostructured copper hydroxide (Cu(OH)2) has shown excellent catalytic properties, but its synthesis requires complex pre‐treatment steps of the Cu surface. In this study, we have developed a simple two‐step synthesis method for homogenous Cu(OH)2 nanoneedle films using a sodium persulfate pre‐treatment step prior to anodization. The Cu(OH)2 nanoneedle films show drastically enhanced uniformity after the pre‐treatment due to improved current distribution and can be grown over large surface areas (63 cm2). As a catalyst for CO2 reduction, the Cu(OH)2 favours ethylene formation, with a near total suppression of methane production. A peak faradaic efficiency (FE) of 36.5 % is found at −1.0 V vs. the reversible hydrogen electrode (RHE), and the catalyst remains stable while providing an ethylene to methane ratio of 27.8 after 6 h of reaction.https://doi.org/10.1002/open.202200133anodizationcopper hydroxideelectrochemical CO2 reductionmulticarbon reaction productsnanoneedles |
| spellingShingle | Kim Robert Gustavsen Prof. Dr. Erik Andrew Johannessen Prof. Dr. Kaiying Wang Sodium Persulfate Pre‐treatment of Copper Foils Enabling Homogenous Growth of Cu(OH)2 Nanoneedle Films for Electrochemical CO2 Reduction ChemistryOpen anodization copper hydroxide electrochemical CO2 reduction multicarbon reaction products nanoneedles |
| title | Sodium Persulfate Pre‐treatment of Copper Foils Enabling Homogenous Growth of Cu(OH)2 Nanoneedle Films for Electrochemical CO2 Reduction |
| title_full | Sodium Persulfate Pre‐treatment of Copper Foils Enabling Homogenous Growth of Cu(OH)2 Nanoneedle Films for Electrochemical CO2 Reduction |
| title_fullStr | Sodium Persulfate Pre‐treatment of Copper Foils Enabling Homogenous Growth of Cu(OH)2 Nanoneedle Films for Electrochemical CO2 Reduction |
| title_full_unstemmed | Sodium Persulfate Pre‐treatment of Copper Foils Enabling Homogenous Growth of Cu(OH)2 Nanoneedle Films for Electrochemical CO2 Reduction |
| title_short | Sodium Persulfate Pre‐treatment of Copper Foils Enabling Homogenous Growth of Cu(OH)2 Nanoneedle Films for Electrochemical CO2 Reduction |
| title_sort | sodium persulfate pre treatment of copper foils enabling homogenous growth of cu oh 2 nanoneedle films for electrochemical co2 reduction |
| topic | anodization copper hydroxide electrochemical CO2 reduction multicarbon reaction products nanoneedles |
| url | https://doi.org/10.1002/open.202200133 |
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