Biomimetic Fe7S8/Carbon electrocatalyst from [FeFe]‐Hydrogenase for improving pH‐Universal electrocatalytic hydrogen production
Abstract Efficient and cost‐effective electrocatalysts that can operate across a wide range of pH conditions are essential for green hydrogen production. Inspired by biological systems, Fe7S8 nanoparticles incorporated on polydopamine matrix electrocatalyst were synthesized by co‐precipitation and a...
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| Format: | Article |
| Language: | English |
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Wiley
2024-02-01
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| Series: | Aggregate |
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| Online Access: | https://doi.org/10.1002/agt2.444 |
| _version_ | 1827347317905162240 |
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| author | Dohun Kim Subramani Surendran Sejin Im Jaehyoung Lim Kyoungsuk Jin Ki Tae Nam Uk Sim |
| author_facet | Dohun Kim Subramani Surendran Sejin Im Jaehyoung Lim Kyoungsuk Jin Ki Tae Nam Uk Sim |
| author_sort | Dohun Kim |
| collection | DOAJ |
| description | Abstract Efficient and cost‐effective electrocatalysts that can operate across a wide range of pH conditions are essential for green hydrogen production. Inspired by biological systems, Fe7S8 nanoparticles incorporated on polydopamine matrix electrocatalyst were synthesized by co‐precipitation and annealing process. The resulting Fe7S8/C electrocatalyst possesses a three‐dimensional structure and exhibits enhanced electrocatalytic performance for hydrogen production across various pH conditions. Notably, the Fe7S8/C electrocatalyst demonstrates exceptional activity, achieving low overpotentials of 90.6, 45.9, and 107.4 mV in acidic, neutral, and alkaline environments, respectively. Electrochemical impedance spectroscopy reveals that Fe7S8/C exhibits the lowest charge transfer resistance under neutral conditions, indicating an improved proton‐coupled electron transfer process. Continuous‐wave electron paramagnetic resonance results confirm a change in the valence state of Fe from 3+ to 1+ during the hydrogen evolution reaction (HER). These findings closely resemble the behavior of natural [FeFe]‐hydrogenase, known for its superior hydrogen production in neutral conditions. The remarkable performance of our Fe7S8/C electrocatalyst opens up new possibilities for utilizing bioinspired materials as catalysts for the HER. |
| first_indexed | 2024-03-07T23:46:51Z |
| format | Article |
| id | doaj.art-16f9ab6fe7dd456e8b46532e2250706c |
| institution | Directory Open Access Journal |
| issn | 2692-4560 |
| language | English |
| last_indexed | 2024-03-07T23:46:51Z |
| publishDate | 2024-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Aggregate |
| spelling | doaj.art-16f9ab6fe7dd456e8b46532e2250706c2024-02-19T11:04:10ZengWileyAggregate2692-45602024-02-0151n/an/a10.1002/agt2.444Biomimetic Fe7S8/Carbon electrocatalyst from [FeFe]‐Hydrogenase for improving pH‐Universal electrocatalytic hydrogen productionDohun Kim0Subramani Surendran1Sejin Im2Jaehyoung Lim3Kyoungsuk Jin4Ki Tae Nam5Uk Sim6Department of Energy Science & Engineering Daegu Gyeongbuk Institute of Science & Technology (DGIST) Daegu Republic of KoreaHydrogen Energy Technology Laboratory Korea Institute of Energy Technology (KENTECH) Naju Republic of KoreaHydrogen Energy Technology Laboratory Korea Institute of Energy Technology (KENTECH) Naju Republic of KoreaHydrogen Energy Technology Laboratory Korea Institute of Energy Technology (KENTECH) Naju Republic of KoreaDepartment of Chemistry Korea University Seoul Republic of KoreaDepartment of Materials Science and Engineering Seoul National University Seoul Republic of KoreaHydrogen Energy Technology Laboratory Korea Institute of Energy Technology (KENTECH) Naju Republic of KoreaAbstract Efficient and cost‐effective electrocatalysts that can operate across a wide range of pH conditions are essential for green hydrogen production. Inspired by biological systems, Fe7S8 nanoparticles incorporated on polydopamine matrix electrocatalyst were synthesized by co‐precipitation and annealing process. The resulting Fe7S8/C electrocatalyst possesses a three‐dimensional structure and exhibits enhanced electrocatalytic performance for hydrogen production across various pH conditions. Notably, the Fe7S8/C electrocatalyst demonstrates exceptional activity, achieving low overpotentials of 90.6, 45.9, and 107.4 mV in acidic, neutral, and alkaline environments, respectively. Electrochemical impedance spectroscopy reveals that Fe7S8/C exhibits the lowest charge transfer resistance under neutral conditions, indicating an improved proton‐coupled electron transfer process. Continuous‐wave electron paramagnetic resonance results confirm a change in the valence state of Fe from 3+ to 1+ during the hydrogen evolution reaction (HER). These findings closely resemble the behavior of natural [FeFe]‐hydrogenase, known for its superior hydrogen production in neutral conditions. The remarkable performance of our Fe7S8/C electrocatalyst opens up new possibilities for utilizing bioinspired materials as catalysts for the HER.https://doi.org/10.1002/agt2.444biomimetic electrocatalysthydrogen productionrenewable energy |
| spellingShingle | Dohun Kim Subramani Surendran Sejin Im Jaehyoung Lim Kyoungsuk Jin Ki Tae Nam Uk Sim Biomimetic Fe7S8/Carbon electrocatalyst from [FeFe]‐Hydrogenase for improving pH‐Universal electrocatalytic hydrogen production Aggregate biomimetic electrocatalyst hydrogen production renewable energy |
| title | Biomimetic Fe7S8/Carbon electrocatalyst from [FeFe]‐Hydrogenase for improving pH‐Universal electrocatalytic hydrogen production |
| title_full | Biomimetic Fe7S8/Carbon electrocatalyst from [FeFe]‐Hydrogenase for improving pH‐Universal electrocatalytic hydrogen production |
| title_fullStr | Biomimetic Fe7S8/Carbon electrocatalyst from [FeFe]‐Hydrogenase for improving pH‐Universal electrocatalytic hydrogen production |
| title_full_unstemmed | Biomimetic Fe7S8/Carbon electrocatalyst from [FeFe]‐Hydrogenase for improving pH‐Universal electrocatalytic hydrogen production |
| title_short | Biomimetic Fe7S8/Carbon electrocatalyst from [FeFe]‐Hydrogenase for improving pH‐Universal electrocatalytic hydrogen production |
| title_sort | biomimetic fe7s8 carbon electrocatalyst from fefe hydrogenase for improving ph universal electrocatalytic hydrogen production |
| topic | biomimetic electrocatalyst hydrogen production renewable energy |
| url | https://doi.org/10.1002/agt2.444 |
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