Rational Design of Metal-Free Nitrogen-Doped Carbon for Controllable Reduction of CO<sub>2</sub> to Syngas
The electrocatalytic reduction of CO<sub>2</sub> (ECO<sub>2</sub>RR) to syngas with tunable CO/H<sub>2</sub> ratios offers a promising route for sustainable energy conversion and chemical production. Here, we report a series of N-doped carbon black (NCBx) catalyst...
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MDPI AG
2025-02-01
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| Series: | Molecules |
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| author | Guangbin An Kang Wang Min Yang Jiye Zhang Haijian Zhong Liang Wang Huazhang Guo |
| author_facet | Guangbin An Kang Wang Min Yang Jiye Zhang Haijian Zhong Liang Wang Huazhang Guo |
| author_sort | Guangbin An |
| collection | DOAJ |
| description | The electrocatalytic reduction of CO<sub>2</sub> (ECO<sub>2</sub>RR) to syngas with tunable CO/H<sub>2</sub> ratios offers a promising route for sustainable energy conversion and chemical production. Here, we report a series of N-doped carbon black (NCBx) catalysts with tailored nitrogen species that enable precise control over the composition of syngas. Among the catalysts, NCB3 exhibits the optimal performance, achieving high CO selectivity (64.14%) and activity (1.9 mA cm<sup>−2</sup>) in an H-type cell at −0.9 V. Furthermore, NCB3 produces syngas with a wide range of CO/H<sub>2</sub> ratios (0.52 to 4.77) across the applied potentials (−0.5 to −1.0 V). Stability tests confirm the robust durability of NCB3, which maintains consistent activity and selectivity over prolonged electrolysis. This work demonstrates the critical role of nitrogen species in tuning ECO<sub>2</sub>RR pathways and establishes a strategy for designing efficient and stable carbon-based catalysts for CO<sub>2</sub> utilization and syngas production. |
| format | Article |
| id | doaj-art-934f3a74ba2d4a0cb9aae3968c395c53 |
| institution | OA Journals |
| issn | 1420-3049 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
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| series | Molecules |
| spelling | doaj-art-934f3a74ba2d4a0cb9aae3968c395c532025-08-20T02:03:41ZengMDPI AGMolecules1420-30492025-02-0130495310.3390/molecules30040953Rational Design of Metal-Free Nitrogen-Doped Carbon for Controllable Reduction of CO<sub>2</sub> to SyngasGuangbin An0Kang Wang1Min Yang2Jiye Zhang3Haijian Zhong4Liang Wang5Huazhang Guo6Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, ChinaInstitute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, ChinaSchool of Information Engineering, Gannan Medical University, Ganzhou 341000, ChinaSchool of Materials Science and Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, ChinaSchool of Information Engineering, Gannan Medical University, Ganzhou 341000, ChinaInstitute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, ChinaInstitute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, ChinaThe electrocatalytic reduction of CO<sub>2</sub> (ECO<sub>2</sub>RR) to syngas with tunable CO/H<sub>2</sub> ratios offers a promising route for sustainable energy conversion and chemical production. Here, we report a series of N-doped carbon black (NCBx) catalysts with tailored nitrogen species that enable precise control over the composition of syngas. Among the catalysts, NCB3 exhibits the optimal performance, achieving high CO selectivity (64.14%) and activity (1.9 mA cm<sup>−2</sup>) in an H-type cell at −0.9 V. Furthermore, NCB3 produces syngas with a wide range of CO/H<sub>2</sub> ratios (0.52 to 4.77) across the applied potentials (−0.5 to −1.0 V). Stability tests confirm the robust durability of NCB3, which maintains consistent activity and selectivity over prolonged electrolysis. This work demonstrates the critical role of nitrogen species in tuning ECO<sub>2</sub>RR pathways and establishes a strategy for designing efficient and stable carbon-based catalysts for CO<sub>2</sub> utilization and syngas production.https://www.mdpi.com/1420-3049/30/4/953nitrogen-doped carboncarbon-based catalystelectrocatalyticCO/H<sub>2</sub> syngas |
| spellingShingle | Guangbin An Kang Wang Min Yang Jiye Zhang Haijian Zhong Liang Wang Huazhang Guo Rational Design of Metal-Free Nitrogen-Doped Carbon for Controllable Reduction of CO<sub>2</sub> to Syngas Molecules nitrogen-doped carbon carbon-based catalyst electrocatalytic CO/H<sub>2</sub> syngas |
| title | Rational Design of Metal-Free Nitrogen-Doped Carbon for Controllable Reduction of CO<sub>2</sub> to Syngas |
| title_full | Rational Design of Metal-Free Nitrogen-Doped Carbon for Controllable Reduction of CO<sub>2</sub> to Syngas |
| title_fullStr | Rational Design of Metal-Free Nitrogen-Doped Carbon for Controllable Reduction of CO<sub>2</sub> to Syngas |
| title_full_unstemmed | Rational Design of Metal-Free Nitrogen-Doped Carbon for Controllable Reduction of CO<sub>2</sub> to Syngas |
| title_short | Rational Design of Metal-Free Nitrogen-Doped Carbon for Controllable Reduction of CO<sub>2</sub> to Syngas |
| title_sort | rational design of metal free nitrogen doped carbon for controllable reduction of co sub 2 sub to syngas |
| topic | nitrogen-doped carbon carbon-based catalyst electrocatalytic CO/H<sub>2</sub> syngas |
| url | https://www.mdpi.com/1420-3049/30/4/953 |
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