A Top‐Down Strategy to Realize Surface Reconstruction of Small‐Sized Platinum‐Based Nanoparticles for Selective Hydrogenation
| العنوان: | A Top‐Down Strategy to Realize Surface Reconstruction of Small‐Sized Platinum‐Based Nanoparticles for Selective Hydrogenation |
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| المؤلفون: | Leigang Li, Shangheng Liu, Xiaoqing Huang, Qi Shao, Yong Xu, Pengtang Wang, Yu Jin, Lu Wang, Xinnan Mao |
| المصدر: | Angewandte Chemie International Edition. 60:17430-17434 |
| بيانات النشر: | Wiley, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Materials science, Nanoparticle, chemistry.chemical_element, General Chemistry, Heterogeneous catalysis, Catalysis, Styrene, chemistry.chemical_compound, chemistry, Chemical engineering, Phenylacetylene, Selectivity, Platinum, Ternary operation |
| الوصف: | Over the past decades, despite the substantial efforts that have been devoted to the modifications of Pt nanoparticles (NPs) to tailor their selectivities for hydrogenation reactions, there are still a lack of facile strategies for precisely regulation of the surface properties of NPs, especially for those with small sizes. In this work, we propose a top-down thermal annealing strategy for tuning the surface properties of Pt-based NPs (≈4 nm) without the occurrence of aggregation. Compared to conventional bottom-up methods, the present top-down strategy can precisely regulate the surface compositions of Pt-Cd NPs and other ternary Pt-Cd-M NPs (M=Fe, Ni, Co, Mn, and Sn). The optimized Pt-Cd NPs exhibit excellent selectivity toward phenylacetylene and 4-nitrostyrene hydrogenations with a styrene selectivity and 4-aminophenyl styrene selectivity of 95.2 % and 94.5 %, respectively. This work provides a general strategy for the surface reconstructions of Pt-based NPs, and promotes fundamental research on catalyst design for heterogeneous catalysis. |
| تدمد: | 1521-3773 1433-7851 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8484d2ff67f34f5d8a21d40c501c3074 https://doi.org/10.1002/anie.202106459 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....8484d2ff67f34f5d8a21d40c501c3074 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15213773 14337851 |
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