| Download | - View final version: Organic photochemistry-assisted nanoparticle segregation on perovskites (PDF, 1.7 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1016/j.xcrp.2020.100243 |
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| Author | Search for: Chen, Zhou; Search for: Hua, Bin; Search for: Zhang, Xin; Search for: Chen, Lifang; Search for: Zhang, Ya-Qian; Search for: Yang, Guangming; Search for: Wan, Gang; Search for: Zhou, Hua; Search for: Yang, Yanling; Search for: Chen, Jian1; Search for: Fan, Hongqiang; Search for: Li, Qian; Search for: Li, Meng; Search for: Li, Jianhui; Search for: Zhou, Wei; Search for: Shao, Zongping; Search for: Luo, Jing-Li; Search for: Sun, Yifei |
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| Affiliation | - National Research Council of Canada. Nanotechnology
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| Format | Text, Article |
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| Subject | NPs/perovskite; organic photochemistry; segregation; room temperature; proton-coupled electron transfer |
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| Abstract | 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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| Publication date | 2020-10-28 |
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| Publisher | Elsevier |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 832bebe3-a1ec-4b24-a6eb-d0a8d787d752 |
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| Record created | 2021-05-17 |
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| Record modified | 2021-05-19 |
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