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- Title
Deciphering CO oxidation on SnO<sub>2</sub> nanosheets: A multinuclear solid-state NMR spectroscopic approach.
- Authors
Xiang Wang; Guodong Qi; Qiang Wang; Jun Xu; Feng Deng
- Abstract
SnO2 nanosheets exhibit exceptional low-temperature CO oxidation activity, yet the nature of their active sites remains enigmatic. Employing solid-state 119Sn and 17O NMR spectroscopy, we deconstructed the intricate structure of active Sn and oxygen species involved in this process. We identified diverse Sn and O environments, revealing surface SnIV sites capable of activating O2 into a critical bidentate 2-O2 species responsible for CO conversion into CO2. In-situ FT-IR spectroscopy studies further revealed the involvement of a carbonate-mediated Mars-van Krevelen mechanism.
- Subjects
NUCLEAR magnetic resonance spectroscopy; STANNIC oxide; NANOSTRUCTURED materials; TIN; CARBON dioxide
- Publication
ARKIVOC: Online Journal of Organic Chemistry, 2024, Vol 2024, p1
- ISSN
1551-7004
- Publication type
Academic Journal
- DOI
10.24820/ark.5550190.p012.152