دورية أكاديمية
Reverse oxygen spillover triggered by CO adsorption on Sn-doped Pt/TiO2 for low-temperature CO oxidation
| العنوان: | Reverse oxygen spillover triggered by CO adsorption on Sn-doped Pt/TiO2 for low-temperature CO oxidation |
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| المؤلفون: | Chen, Jianjun, Xiong, Shangchao, Liu, Haiyan, Shi, Jianqiang, Mi, Jinxing, Liu, Hao, Gong, Zhengjun, Oliviero, Laetitia, Maugé, Françoise, Li, Junhua |
| المساهمون: | Laboratoire catalyse et spectrochimie (LCS), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | ISSN: 2041-1723. |
| بيانات النشر: | HAL CCSD Nature Publishing Group |
| سنة النشر: | 2023 |
| المجموعة: | Normandie Université: HAL |
| مصطلحات موضوعية: | [CHIM]Chemical Sciences, [CHIM.CATA]Chemical Sciences/Catalysis |
| الوصف: | International audience ; Abstract The spillover of oxygen species is fundamentally important in redox reactions, but the spillover mechanism has been less understood compared to that of hydrogen spillover. Herein Sn is doped into TiO 2 to activate low-temperature (<100 °C) reverse oxygen spillover in Pt/TiO 2 catalyst, leading to CO oxidation activity much higher than that of most oxide-supported Pt catalysts. A combination of near-ambient-pressure X-ray photoelectron spectroscopy, in situ Raman/Infrared spectroscopies, and ab initio molecular dynamics simulations reveal that the reverse oxygen spillover is triggered by CO adsorption at Pt 2+ sites, followed by bond cleavage of Ti-O-Sn moieties nearby and the appearance of Pt 4+ species. The O in the catalytically indispensable Pt-O species is energetically more favourable to be originated from Ti-O-Sn. This work clearly depicts the interfacial chemistry of reverse oxygen spillover that is triggered by CO adsorption, and the understanding is helpful for the design of platinum/titania catalysts suitable for reactions of various reactants. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | hal-04239732; https://hal.science/hal-04239732Test; https://hal.science/hal-04239732/documentTest; https://hal.science/hal-04239732/file/20230601-revised%20manuscript%20vf.pdfTest |
| DOI: | 10.1038/s41467-023-39226-6 |
| الإتاحة: | https://doi.org/10.1038/s41467-023-39226-6Test https://hal.science/hal-04239732Test https://hal.science/hal-04239732/documentTest https://hal.science/hal-04239732/file/20230601-revised%20manuscript%20vf.pdfTest |
| حقوق: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.CC655315 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1038/s41467-023-39226-6 |
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