Iron single-atom catalysts confined in covalent organic frameworks for efficient oxygen evolution reaction
Summary: The exploration of environmentally friendly and highly efficient oxygen evolution reaction (OER) catalysts is vital to large-scale, electrochemical renewable-fuels generation. Here, we report an iron single-atom catalyst (SAC) confined in a covalent organic framework (Fe-SAC@COF), which con...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-03-01
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| Series: | Cell Reports Physical Science |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666386422000741 |
| _version_ | 1818338383182692352 |
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| author | Xiao Wang Lei Sun Wei Zhou Li Yang Guoqing Ren Hao Wu Wei-Qiao Deng |
| author_facet | Xiao Wang Lei Sun Wei Zhou Li Yang Guoqing Ren Hao Wu Wei-Qiao Deng |
| author_sort | Xiao Wang |
| collection | DOAJ |
| description | Summary: The exploration of environmentally friendly and highly efficient oxygen evolution reaction (OER) catalysts is vital to large-scale, electrochemical renewable-fuels generation. Here, we report an iron single-atom catalyst (SAC) confined in a covalent organic framework (Fe-SAC@COF), which constitutes an unusual Fe–NO coordination in the skeleton. The as-prepared Fe-SAC@COF exhibits a high mass activity of 9.20 A mg−1, which is 1.95 times higher than Ni species of the same coordination and 5.05 times higher than nanoparticulate Fe counterpart. Moreover, it shows, to the best of our knowledge, a record-low overpotential (290 mV) and Tafel slope (40 mV dec−1) among the reported atomically dispersed Fe-based catalysts and surpasses the benchmark Ir/C catalyst. The density functional theory calculation shows that the Fe–NO coordination exhibits low binding energy of oxygenated intermediates, which leads to an outstanding electrocatalytic OER performance. This work provides design strategies toward unusually coordinated SACs by prudent COF confinement for advanced electrocatalysis. |
| first_indexed | 2024-12-13T15:10:14Z |
| format | Article |
| id | doaj.art-905e0b27415843038afc89371ef79f9a |
| institution | Directory Open Access Journal |
| issn | 2666-3864 |
| language | English |
| last_indexed | 2024-12-13T15:10:14Z |
| publishDate | 2022-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Cell Reports Physical Science |
| spelling | doaj.art-905e0b27415843038afc89371ef79f9a2022-12-21T23:40:54ZengElsevierCell Reports Physical Science2666-38642022-03-0133100804Iron single-atom catalysts confined in covalent organic frameworks for efficient oxygen evolution reactionXiao Wang0Lei Sun1Wei Zhou2Li Yang3Guoqing Ren4Hao Wu5Wei-Qiao Deng6Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, ChinaInstitute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, ChinaInstitute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, ChinaInstitute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, ChinaInstitute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, ChinaInstitute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, China; Corresponding authorInstitute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, China; Corresponding authorSummary: The exploration of environmentally friendly and highly efficient oxygen evolution reaction (OER) catalysts is vital to large-scale, electrochemical renewable-fuels generation. Here, we report an iron single-atom catalyst (SAC) confined in a covalent organic framework (Fe-SAC@COF), which constitutes an unusual Fe–NO coordination in the skeleton. The as-prepared Fe-SAC@COF exhibits a high mass activity of 9.20 A mg−1, which is 1.95 times higher than Ni species of the same coordination and 5.05 times higher than nanoparticulate Fe counterpart. Moreover, it shows, to the best of our knowledge, a record-low overpotential (290 mV) and Tafel slope (40 mV dec−1) among the reported atomically dispersed Fe-based catalysts and surpasses the benchmark Ir/C catalyst. The density functional theory calculation shows that the Fe–NO coordination exhibits low binding energy of oxygenated intermediates, which leads to an outstanding electrocatalytic OER performance. This work provides design strategies toward unusually coordinated SACs by prudent COF confinement for advanced electrocatalysis.http://www.sciencedirect.com/science/article/pii/S2666386422000741single-atom catalystsoxygen evolution reactioncovalent organic frameworkscoordination modes |
| spellingShingle | Xiao Wang Lei Sun Wei Zhou Li Yang Guoqing Ren Hao Wu Wei-Qiao Deng Iron single-atom catalysts confined in covalent organic frameworks for efficient oxygen evolution reaction Cell Reports Physical Science single-atom catalysts oxygen evolution reaction covalent organic frameworks coordination modes |
| title | Iron single-atom catalysts confined in covalent organic frameworks for efficient oxygen evolution reaction |
| title_full | Iron single-atom catalysts confined in covalent organic frameworks for efficient oxygen evolution reaction |
| title_fullStr | Iron single-atom catalysts confined in covalent organic frameworks for efficient oxygen evolution reaction |
| title_full_unstemmed | Iron single-atom catalysts confined in covalent organic frameworks for efficient oxygen evolution reaction |
| title_short | Iron single-atom catalysts confined in covalent organic frameworks for efficient oxygen evolution reaction |
| title_sort | iron single atom catalysts confined in covalent organic frameworks for efficient oxygen evolution reaction |
| topic | single-atom catalysts oxygen evolution reaction covalent organic frameworks coordination modes |
| url | http://www.sciencedirect.com/science/article/pii/S2666386422000741 |
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