Biochar-Supported BiO<sub>x</sub> for Effective Electrosynthesis of Formic Acid from Carbon Dioxide Reduction
The electrochemical reduction of carbon dioxide (CO<sub>2</sub>) to value-added chemicals and fuels has attracted worldwide interest for its potential to address various contemporary global issues such as CO<sub>2</sub>-related climate change, the earth’s carbon deficit and t...
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| Format: | Article |
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MDPI AG
2021-03-01
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| Online Access: | https://www.mdpi.com/2073-4352/11/4/363 |
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| author | Juqin Zeng Pravin Jagdale Mirtha A. O. Lourenço M. Amin Farkhondehfal Daniele Sassone Mattia Bartoli Candido Fabrizio Pirri |
| author_facet | Juqin Zeng Pravin Jagdale Mirtha A. O. Lourenço M. Amin Farkhondehfal Daniele Sassone Mattia Bartoli Candido Fabrizio Pirri |
| author_sort | Juqin Zeng |
| collection | DOAJ |
| description | The electrochemical reduction of carbon dioxide (CO<sub>2</sub>) to value-added chemicals and fuels has attracted worldwide interest for its potential to address various contemporary global issues such as CO<sub>2</sub>-related climate change, the earth’s carbon deficit and the energy crisis. In the development of this technology, many efforts have been focused on the design of inexpensive, eco-friendly and effective catalysts. In this work, a bismuth (Bi)-based material was simply synthesized via a scalable method and fully characterized by physical, chemical and electrochemical techniques. The catalyst material consisted of Bi/Bi<sub>2</sub>O<sub>3</sub> nanoparticles and a biochar prevenient from the pyrolysis of brewed coffee waste. It was observed that the surface of the biochar was thoroughly decorated with nanoparticles. Due to its uniform surface, the biochar–BiO<sub>x</sub> electrode demonstrated good selectivity for CO<sub>2</sub> reduction, showing a faradaic efficiency of more than 90% for CO and HCOOH formation in a wide potential range. Particularly, the selectivity for HCOOH reached more than 80% from −0.9 V to −1.3 V vs the reversible hydrogen electrode and peaks at 87%. Besides the selectivity, the production rate of HCOOH also achieved significant values with a maximum of 59.6 mg cm<sup>−2</sup> h<sup>−1</sup>, implying a good application potential for biochar–BiO<sub>x</sub> material in the conversion of CO<sub>2</sub> to HCOOH. |
| first_indexed | 2024-03-10T12:46:18Z |
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| id | doaj.art-39e46a34a4de42299f654cf191159efb |
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| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T12:46:18Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-39e46a34a4de42299f654cf191159efb2023-11-21T13:24:32ZengMDPI AGCrystals2073-43522021-03-0111436310.3390/cryst11040363Biochar-Supported BiO<sub>x</sub> for Effective Electrosynthesis of Formic Acid from Carbon Dioxide ReductionJuqin Zeng0Pravin Jagdale1Mirtha A. O. Lourenço2M. Amin Farkhondehfal3Daniele Sassone4Mattia Bartoli5Candido Fabrizio Pirri6Center for Sustainable Future Technologies @POLITO, Istituto Italiano di Tecnologia, Via Livorno 60, 10144 Turin, ItalyCenter for Sustainable Future Technologies @POLITO, Istituto Italiano di Tecnologia, Via Livorno 60, 10144 Turin, ItalyCenter for Sustainable Future Technologies @POLITO, Istituto Italiano di Tecnologia, Via Livorno 60, 10144 Turin, ItalyCenter for Sustainable Future Technologies @POLITO, Istituto Italiano di Tecnologia, Via Livorno 60, 10144 Turin, ItalyCenter for Sustainable Future Technologies @POLITO, Istituto Italiano di Tecnologia, Via Livorno 60, 10144 Turin, ItalyDepartment of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, ItalyCenter for Sustainable Future Technologies @POLITO, Istituto Italiano di Tecnologia, Via Livorno 60, 10144 Turin, ItalyThe electrochemical reduction of carbon dioxide (CO<sub>2</sub>) to value-added chemicals and fuels has attracted worldwide interest for its potential to address various contemporary global issues such as CO<sub>2</sub>-related climate change, the earth’s carbon deficit and the energy crisis. In the development of this technology, many efforts have been focused on the design of inexpensive, eco-friendly and effective catalysts. In this work, a bismuth (Bi)-based material was simply synthesized via a scalable method and fully characterized by physical, chemical and electrochemical techniques. The catalyst material consisted of Bi/Bi<sub>2</sub>O<sub>3</sub> nanoparticles and a biochar prevenient from the pyrolysis of brewed coffee waste. It was observed that the surface of the biochar was thoroughly decorated with nanoparticles. Due to its uniform surface, the biochar–BiO<sub>x</sub> electrode demonstrated good selectivity for CO<sub>2</sub> reduction, showing a faradaic efficiency of more than 90% for CO and HCOOH formation in a wide potential range. Particularly, the selectivity for HCOOH reached more than 80% from −0.9 V to −1.3 V vs the reversible hydrogen electrode and peaks at 87%. Besides the selectivity, the production rate of HCOOH also achieved significant values with a maximum of 59.6 mg cm<sup>−2</sup> h<sup>−1</sup>, implying a good application potential for biochar–BiO<sub>x</sub> material in the conversion of CO<sub>2</sub> to HCOOH.https://www.mdpi.com/2073-4352/11/4/363carbon dioxide reductionelectrochemistrycatalystbismuthformic acidproduction rate |
| spellingShingle | Juqin Zeng Pravin Jagdale Mirtha A. O. Lourenço M. Amin Farkhondehfal Daniele Sassone Mattia Bartoli Candido Fabrizio Pirri Biochar-Supported BiO<sub>x</sub> for Effective Electrosynthesis of Formic Acid from Carbon Dioxide Reduction Crystals carbon dioxide reduction electrochemistry catalyst bismuth formic acid production rate |
| title | Biochar-Supported BiO<sub>x</sub> for Effective Electrosynthesis of Formic Acid from Carbon Dioxide Reduction |
| title_full | Biochar-Supported BiO<sub>x</sub> for Effective Electrosynthesis of Formic Acid from Carbon Dioxide Reduction |
| title_fullStr | Biochar-Supported BiO<sub>x</sub> for Effective Electrosynthesis of Formic Acid from Carbon Dioxide Reduction |
| title_full_unstemmed | Biochar-Supported BiO<sub>x</sub> for Effective Electrosynthesis of Formic Acid from Carbon Dioxide Reduction |
| title_short | Biochar-Supported BiO<sub>x</sub> for Effective Electrosynthesis of Formic Acid from Carbon Dioxide Reduction |
| title_sort | biochar supported bio sub x sub for effective electrosynthesis of formic acid from carbon dioxide reduction |
| topic | carbon dioxide reduction electrochemistry catalyst bismuth formic acid production rate |
| url | https://www.mdpi.com/2073-4352/11/4/363 |
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