期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 112, 期 29, 页码 10918-10922出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp8004103
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资金
- Engineering and Physical Sciences Research Council [EP/C51744X/1, EP/C54188X/1] Funding Source: researchfish
- EPSRC [EP/C54188X/1] Funding Source: UKRI
Photoelectron spectroscopy and scanning tunneling microscopy have been used to investigate how the oxidation state of Ce in CeO2-x(111) ultrathin films is influenced by the presence of Pd nanoparticles. Pd induces an increase in the concentration of Ce3+ cations, which is interpreted as charge transfer from Pd to CeO2-x(111) on the basis of DFT+U calculations. Charge transfer from Pd to Ce4+ is found to be energetically favorable even for individual Pd adatoms. These results have implications for our understanding of the redox behavior of ceria-based model catalyst systems.
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