Surface effects of functionalized Cu2O-derived Cu(0) for C2+-selective electrochemical CO2 reduction
Selective electrochemical carbon dioxide reduction (CO2RR) to multi-carbon (C2+) products is an attractive method to close the carbon cycle as well as to provide a long-term, large-scale energy storage solution. With copper catalysts, since C2+ product formation is in direct competition with the for...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2022
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| Online Access: | https://hdl.handle.net/10356/158217 |
| _version_ | 1826114110116331520 |
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| author | Lim, Carina Yi Jing |
| author2 | Kedar Hippalgaonkar |
| author_facet | Kedar Hippalgaonkar Lim, Carina Yi Jing |
| author_sort | Lim, Carina Yi Jing |
| collection | NTU |
| description | Selective electrochemical carbon dioxide reduction (CO2RR) to multi-carbon (C2+) products is an attractive method to close the carbon cycle as well as to provide a long-term, large-scale energy storage solution. With copper catalysts, since C2+ product formation is in direct competition with the formation of single-carbon products and hydrogen evolution, methods to modulate the product selectivity are highly desirable. In addition, surface charging effects are not commonly considered in CO2RR experiments. Functionalized cuprous oxide-derived copper synthesized via a simple wet chemistry approach was tested in a H-cell set-up and their surface properties were then studied with electrochemical impedance spectroscopy (EIS) and pulsed voltammetry (PV). Selectivity and turnover were observed to improve with imidazole functionalization, with exceptionally high C2+ selectivity and wide C2+-selectivity potential widow with histidine-functionalized catalysts. In addition, strong correlations of parameters describing surface charging effects obtained from EIS and PV highlight its importance in influencing C2+ selectivity. The strong correlation between EIS and PV parameters with C2+ selectivity also suggests the potential of these experiments to be exploited for high-throughput catalyst discovery in the future. |
| first_indexed | 2024-10-01T03:34:07Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/158217 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:34:07Z |
| publishDate | 2022 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1582172022-06-03T07:09:59Z Surface effects of functionalized Cu2O-derived Cu(0) for C2+-selective electrochemical CO2 reduction Lim, Carina Yi Jing Kedar Hippalgaonkar School of Materials Science and Engineering A*STAR Institute of Materials Research and Engineering kedar@ntu.edu.sg Engineering::Materials Selective electrochemical carbon dioxide reduction (CO2RR) to multi-carbon (C2+) products is an attractive method to close the carbon cycle as well as to provide a long-term, large-scale energy storage solution. With copper catalysts, since C2+ product formation is in direct competition with the formation of single-carbon products and hydrogen evolution, methods to modulate the product selectivity are highly desirable. In addition, surface charging effects are not commonly considered in CO2RR experiments. Functionalized cuprous oxide-derived copper synthesized via a simple wet chemistry approach was tested in a H-cell set-up and their surface properties were then studied with electrochemical impedance spectroscopy (EIS) and pulsed voltammetry (PV). Selectivity and turnover were observed to improve with imidazole functionalization, with exceptionally high C2+ selectivity and wide C2+-selectivity potential widow with histidine-functionalized catalysts. In addition, strong correlations of parameters describing surface charging effects obtained from EIS and PV highlight its importance in influencing C2+ selectivity. The strong correlation between EIS and PV parameters with C2+ selectivity also suggests the potential of these experiments to be exploited for high-throughput catalyst discovery in the future. Bachelor of Engineering (Materials Engineering) 2022-06-01T13:07:31Z 2022-06-01T13:07:31Z 2022 Final Year Project (FYP) Lim, C. Y. J. (2022). Surface effects of functionalized Cu2O-derived Cu(0) for C2+-selective electrochemical CO2 reduction. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/158217 https://hdl.handle.net/10356/158217 en application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Materials Lim, Carina Yi Jing Surface effects of functionalized Cu2O-derived Cu(0) for C2+-selective electrochemical CO2 reduction |
| title | Surface effects of functionalized Cu2O-derived Cu(0) for C2+-selective electrochemical CO2 reduction |
| title_full | Surface effects of functionalized Cu2O-derived Cu(0) for C2+-selective electrochemical CO2 reduction |
| title_fullStr | Surface effects of functionalized Cu2O-derived Cu(0) for C2+-selective electrochemical CO2 reduction |
| title_full_unstemmed | Surface effects of functionalized Cu2O-derived Cu(0) for C2+-selective electrochemical CO2 reduction |
| title_short | Surface effects of functionalized Cu2O-derived Cu(0) for C2+-selective electrochemical CO2 reduction |
| title_sort | surface effects of functionalized cu2o derived cu 0 for c2 selective electrochemical co2 reduction |
| topic | Engineering::Materials |
| url | https://hdl.handle.net/10356/158217 |
| work_keys_str_mv | AT limcarinayijing surfaceeffectsoffunctionalizedcu2oderivedcu0forc2selectiveelectrochemicalco2reduction |