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|a 10.1002/adma.202408341
|2 doi
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|a pubmed24n1550.xml
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|a (NLM)39097953
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|a eng
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|a Zhang, Qiqi
|e verfasserin
|4 aut
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|a Bifunctional Oxygen-Defect Bismuth Catalyst toward Concerted Production of H2O2 with over 150% Cell Faradaic Efficiency in Continuously Flowing Paired-Electrosynthesis System
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|c 2024
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|a Text
|b txt
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 27.09.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 Wiley‐VCH GmbH.
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|a The electrosynthesis of hydrogen peroxide (H2O2) from O2 or H2O via the two-electron (2e-) oxygen reduction (2e- ORR) or water oxidation (2e- WOR) reaction provides a green and sustainable alternative to the traditional anthraquinone process. Herein, a paired-electrosynthesis tactic is reported for concerted H2O2 production at a high rate by coupling the 2e- ORR and 2e- WOR, in which the bifunctional oxygen-vacancy-enriched Bi2O3 nanorods (Ov-Bi2O3-EO), obtained through electrochemically oxidative reconstruction of Bi-based metal-organic framework (Bi-MOF) nanorod precursor, are used as both efficient anodic and cathodic electrocatalysts, achieving concurrent H2O2 production at both electrodes with high Faradaic efficiencies. Specifically, the coupled 2e- ORR//2e- WOR electrolysis system based on such distinctive oxygen-defect Bi catalyst displays excellent performance for the paired-electrosynthesis of H2O2, delivering a remarkable cell Faradaic efficiency of 154.8% and an ultrahigh H2O2 production rate of 4.3 mmol h-1 cm-2. Experiments combined with theoretical analysis reveal the crucial role of oxygen vacancies in optimizing the adsorption of intermediates associated with the selective two-electron reaction pathways, thereby improving the activity and selectivity of the 2e- reaction processes at both electrodes. This work establishes a new paradigm for developing advanced electrocatalysts and designing novel paired-electrolysis systems for scalable and sustainable H2O2 electrosynthesis
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|a Journal Article
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|a hydrogen peroxide
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|a oxygen reduction reaction
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|a oxygen vacancy
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|a paired‐electrosynthesis
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|a water oxidation reaction
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| 700 |
1 |
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|a Cao, Changsheng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhou, Shenghua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wei, Wenbo
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chen, Xin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xu, Rongjie
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, Xin-Tao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhu, Qi-Long
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 39 vom: 03. Sept., Seite e2408341
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:36
|g year:2024
|g number:39
|g day:03
|g month:09
|g pages:e2408341
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|u http://dx.doi.org/10.1002/adma.202408341
|3 Volltext
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