Two-Dimensional Titanium and Molybdenum Carbide MXenes as Electrocatalysts for CO2 Reduction
Summary: Electrocatalytic CO2 reduction reaction (CO2RR) is an attractive way to produce renewable fuel and chemical feedstock, especially when coupled with efficient CO2 capture and clean energy sources. On the fundamental side, research on improving CO2RR activity still revolves around late transi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-06-01
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| Series: | iScience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004220303667 |
| _version_ | 1818267400185839616 |
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| author | Albertus D. Handoko Hetian Chen Yanwei Lum Qianfan Zhang Babak Anasori Zhi Wei Seh |
| author_facet | Albertus D. Handoko Hetian Chen Yanwei Lum Qianfan Zhang Babak Anasori Zhi Wei Seh |
| author_sort | Albertus D. Handoko |
| collection | DOAJ |
| description | Summary: Electrocatalytic CO2 reduction reaction (CO2RR) is an attractive way to produce renewable fuel and chemical feedstock, especially when coupled with efficient CO2 capture and clean energy sources. On the fundamental side, research on improving CO2RR activity still revolves around late transition metal-based catalysts, which are limited by unfavorable scaling relations despite intense investigation. Here, we report a combined experimental and theoretical investigation into electrocatalytic CO2RR on Ti- and Mo-based MXene catalysts. Formic acid is found as the main product on Ti2CTx and Mo2CTx MXenes, with peak Faradaic efficiency of over 56% on Ti2CTx and partial current density of up to −2.5 mA cm−2 on Mo2CTx. Furthermore, simulations reveal the critical role of the Tx group: a smaller overpotential is found to occur at lower amounts of –F termination. This work represents an important step toward experimental demonstration of MXenes for more complex electrocatalytic reactions in the future. |
| first_indexed | 2024-12-12T20:21:59Z |
| format | Article |
| id | doaj.art-c102f3f9fce64ff9bd6ff3ad7190f448 |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-12-12T20:21:59Z |
| publishDate | 2020-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-c102f3f9fce64ff9bd6ff3ad7190f4482022-12-22T00:13:15ZengElsevieriScience2589-00422020-06-01236101181Two-Dimensional Titanium and Molybdenum Carbide MXenes as Electrocatalysts for CO2 ReductionAlbertus D. Handoko0Hetian Chen1Yanwei Lum2Qianfan Zhang3Babak Anasori4Zhi Wei Seh5Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A∗STAR), 2 Fusionopolis Way, Innovis, Singapore 138634, SingaporeSchool of Materials Science and Engineering, Beihang University, Beijing, 100191, P. R. ChinaInstitute of Materials Research and Engineering, Agency for Science, Technology and Research (A∗STAR), 2 Fusionopolis Way, Innovis, Singapore 138634, SingaporeSchool of Materials Science and Engineering, Beihang University, Beijing, 100191, P. R. China; Corresponding authorDepartment of Mechanical and Energy Engineering, Integrated Nanosystems Development Institute, Indiana University–Purdue University Indianapolis, Indianapolis, IN 46202, USA; A.J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, PA 19104, USA; Corresponding authorInstitute of Materials Research and Engineering, Agency for Science, Technology and Research (A∗STAR), 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore; Corresponding authorSummary: Electrocatalytic CO2 reduction reaction (CO2RR) is an attractive way to produce renewable fuel and chemical feedstock, especially when coupled with efficient CO2 capture and clean energy sources. On the fundamental side, research on improving CO2RR activity still revolves around late transition metal-based catalysts, which are limited by unfavorable scaling relations despite intense investigation. Here, we report a combined experimental and theoretical investigation into electrocatalytic CO2RR on Ti- and Mo-based MXene catalysts. Formic acid is found as the main product on Ti2CTx and Mo2CTx MXenes, with peak Faradaic efficiency of over 56% on Ti2CTx and partial current density of up to −2.5 mA cm−2 on Mo2CTx. Furthermore, simulations reveal the critical role of the Tx group: a smaller overpotential is found to occur at lower amounts of –F termination. This work represents an important step toward experimental demonstration of MXenes for more complex electrocatalytic reactions in the future.http://www.sciencedirect.com/science/article/pii/S2589004220303667CatalysisElectrochemistryMaterials Science |
| spellingShingle | Albertus D. Handoko Hetian Chen Yanwei Lum Qianfan Zhang Babak Anasori Zhi Wei Seh Two-Dimensional Titanium and Molybdenum Carbide MXenes as Electrocatalysts for CO2 Reduction iScience Catalysis Electrochemistry Materials Science |
| title | Two-Dimensional Titanium and Molybdenum Carbide MXenes as Electrocatalysts for CO2 Reduction |
| title_full | Two-Dimensional Titanium and Molybdenum Carbide MXenes as Electrocatalysts for CO2 Reduction |
| title_fullStr | Two-Dimensional Titanium and Molybdenum Carbide MXenes as Electrocatalysts for CO2 Reduction |
| title_full_unstemmed | Two-Dimensional Titanium and Molybdenum Carbide MXenes as Electrocatalysts for CO2 Reduction |
| title_short | Two-Dimensional Titanium and Molybdenum Carbide MXenes as Electrocatalysts for CO2 Reduction |
| title_sort | two dimensional titanium and molybdenum carbide mxenes as electrocatalysts for co2 reduction |
| topic | Catalysis Electrochemistry Materials Science |
| url | http://www.sciencedirect.com/science/article/pii/S2589004220303667 |
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