期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 4, 期 1, 页码 30-35出版社
AMER CHEMICAL SOC
DOI: 10.1021/jz301856a
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资金
- Deutsche Forschungsgemeinschaft (DFG) within the Excellence Cluster Engineering of Advanced Materials
- Fonds der Chemischen Industrie
- Erlangen Catalysis Resource Center
- COST Action Reducible Oxides Structure and Functions [CM 1104]
- DAAD
- ERC Advanced Investigator Grant
- Ministry of Education of the Czech Republic [LA08022, LD11047, LG12003]
Practical applications of ionic liquids (ILs) often involve IL/oxide interfaces, but little is known regarding their interfacial chemistry. The unusual physicochemical properties of ILs, including their exceptionally low vapor pressure, provide access to such interfaces using a surface science approach in ultrahigh vacuum (UHV). We have applied synchrotron radiation photoelectron spectroscopy (SR-PES) to the study of a thin film of the ionic liquid [C(6)C(1)Im][Tf2N] prepared in situ in UHV on ordered stoichiometric CeO2(111) and partially reduced CeO2-x. On the partially reduced surface, we mostly observe decomposition of the anion. On the stoichiometric CeO2(111) surface, however, a layer of surface-anchored organic products with high thermal stability is formed upon reaction of the cation. The suggested acid-base reaction pathway may provide well-defined functionalized IL/solid interfaces on basic oxides.
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