Academic Journal
Vacancy‐induced catalytic mechanism for alcohol electrooxidation on nickel‐based electrocatalyst
| العنوان: | Vacancy‐induced catalytic mechanism for alcohol electrooxidation on nickel‐based electrocatalyst |
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| المؤلفون: | Chen, Wei, Shi, Jianqiao, Wu, Yandong, Jiang, Yimin, Huang, Yu‐Cheng, Zhou, Wang, Liu, Jilei, Dong, Chung‐Li, Zou, Yuqin, Wang, Shuangyin |
| المصدر: | Angewandte Chemie International Edition ; volume 63, issue 4 ; ISSN 1433-7851 1521-3773 |
| بيانات النشر: | Wiley |
| سنة النشر: | 2023 |
| المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: | Owing to outstanding performances, nickel‐based electrocatalysts are commonly used in electrochemical alcohol oxidation reactions (AORs), and the active phase is usually vacancy‐rich nickel oxide/hydroxide (NiO x H y ) species. However, researchers are not aware of the catalytic role of atom vacancy in AORs. Here, we study vacancy‐induced catalytic mechanisms for AORs on NiO x H y species. As to AORs on oxygen‐vacancy‐poor β‐Ni(OH) 2 , the only redox mediator is electrooxidation‐induced electrophilic lattice oxygen species, which can only catalyze the dehydrogenation process (e.g., the electrooxidation of primary alcohol to carboxylic acid) instead of the C−C bond cleavage. Hence, vicinal diol electrooxidation reaction involving the C−C bond cleavage is not feasible with oxygen‐vacancy‐poor β‐Ni(OH) 2 . Only through oxygen vacancy‐induced adsorbed oxygen‐mediated mechanism, can oxygen‐vacancy‐rich NiO x H y species catalyze the electrooxidation of vicinal diol to carboxylic acid and formic acid accompanied with the C−C bond cleavage. Crucially, we examine how vacancies and vacancy‐induced catalytic mechanisms work during AORs on NiO x H y species. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1002/anie.202316449 |
| الاتاحة: | https://doi.org/10.1002/anie.202316449 https://onlinelibrary.wiley.com/doi/pdf/10.1002/anie.202316449 |
| Rights: | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| رقم الانضمام: | edsbas.AD5F379E |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/anie.202316449 |
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