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| DOI | Trouver le DOI : https://doi.org/10.1016/j.xcrp.2020.100243 |
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| Auteur | Rechercher : Chen, Zhou; Rechercher : Hua, Bin; Rechercher : Zhang, Xin; Rechercher : Chen, Lifang; Rechercher : Zhang, Ya-Qian; Rechercher : Yang, Guangming; Rechercher : Wan, Gang; Rechercher : Zhou, Hua; Rechercher : Yang, Yanling; Rechercher : Chen, Jian1; Rechercher : Fan, Hongqiang; Rechercher : Li, Qian; Rechercher : Li, Meng; Rechercher : Li, Jianhui; Rechercher : Zhou, Wei; Rechercher : Shao, Zongping; Rechercher : Luo, Jing-Li; Rechercher : Sun, Yifei |
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| Affiliation | - Conseil national de recherches du Canada. Nanotechnologie
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| Format | Texte, Article |
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| Sujet | NPs/perovskite; organic photochemistry; segregation; room temperature; proton-coupled electron transfer |
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| Résumé | The segregation (or exsolution) of nanoparticles (NPs) on the surface of perovskite oxide parents has emerged as an advanced technology to design functional materials for renewable energy. However, this process relies heavily upon lengthy reduction (800–1,200 K) in hydrogen-rich environments to facilitate the electron transfer from hydrogen to oxides, making this process costly. Here, we show that, in addition to thermal driving forces, photo-illumination can drive electron donation and facilitate the electron harvesting on perovskite directly. This results in segregation of NPs at room temperature with the assistance of trialkyl amine as a hole acceptor. A proton-coupled electron transfer catalytic cycle is suggested to explain this unusual electron transfer pathway, which is redox neutral and an intrinsically closed cycle. The practicality of this process is demonstrated by the improved performance in a trial electrocatalytic oxygen evolution reaction. This work suggests a promising design principle for perovskite functionalization. |
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| Date de publication | 2020-10-28 |
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| Maison d’édition | Elsevier |
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| Licence | |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 832bebe3-a1ec-4b24-a6eb-d0a8d787d752 |
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| Enregistrement créé | 2021-05-17 |
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| Enregistrement modifié | 2021-05-19 |
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