Enhanced electrocatalytic performance for H2O2 generation by boron-doped porous carbon hollow spheres
© 2024 The Authors..
Electrocatalytic generation of H2O2 via the 2-electron pathway of oxygen reduction reaction (2e-ORR) is an attractive technology compared to the anthraquinone process due to convenience and environmental friendliness. However, catalysts with excellent selectivity and high activity for 2e-ORR are necessary for practical applications. Reported here is a catalyst comprising boron-doped porous carbon hollow spheres (B-PCHSs) prepared using the hard template method coupled with borate transesterification. In an alkali electrolyte, the selectivity of B-PCHS for 2e-ORR above 90% in range of 0.4-0.7 VRHE and an onset potential of 0.833 V was obtained. Meanwhile, the generation rate of H2O2 reached 902.48 mmol h-1 gcat-1 at 0.4 VRHE under 59.13 mA cm-2 in batch electrolysis. The excellent catalytic selectivity of B-PCHS for 2e-ORR originates from the boron element, and the catalytic activity of B-PCHS for H2O2 generation is contributed to the morphology of porous hollow spheres, which facilitates mass transfer processes.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:27 |
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| Enthalten in: |
iScience - 27(2024), 4 vom: 19. Apr., Seite 109553 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Wang, Zhaohui [VerfasserIn] |
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| Anmerkungen: |
Date Revised 25.04.2024 published: Electronic-eCollection Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1016/j.isci.2024.109553 |
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NLM371124581 |
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| 520 | |a © 2024 The Authors. | ||
| 520 | |a Electrocatalytic generation of H2O2 via the 2-electron pathway of oxygen reduction reaction (2e-ORR) is an attractive technology compared to the anthraquinone process due to convenience and environmental friendliness. However, catalysts with excellent selectivity and high activity for 2e-ORR are necessary for practical applications. Reported here is a catalyst comprising boron-doped porous carbon hollow spheres (B-PCHSs) prepared using the hard template method coupled with borate transesterification. In an alkali electrolyte, the selectivity of B-PCHS for 2e-ORR above 90% in range of 0.4-0.7 VRHE and an onset potential of 0.833 V was obtained. Meanwhile, the generation rate of H2O2 reached 902.48 mmol h-1 gcat-1 at 0.4 VRHE under 59.13 mA cm-2 in batch electrolysis. The excellent catalytic selectivity of B-PCHS for 2e-ORR originates from the boron element, and the catalytic activity of B-PCHS for H2O2 generation is contributed to the morphology of porous hollow spheres, which facilitates mass transfer processes | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Chemistry | |
| 650 | 4 | |a Electrochemistry | |
| 700 | 1 | |a Sun, Zehan |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Kun |e verfasserin |4 aut | |
| 700 | 1 | |a Fan, Keyi |e verfasserin |4 aut | |
| 700 | 1 | |a Tian, Tian |e verfasserin |4 aut | |
| 700 | 1 | |a Jiang, Haomin |e verfasserin |4 aut | |
| 700 | 1 | |a Jin, Honglei |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Ang |e verfasserin |4 aut | |
| 700 | 1 | |a Tang, Yang |e verfasserin |4 aut | |
| 700 | 1 | |a Sun, Yanzhi |e verfasserin |4 aut | |
| 700 | 1 | |a Wan, Pingyu |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Yongmei |e verfasserin |4 aut | |
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