期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 116, 期 4, 页码 2960-2966出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp209966g
关键词
-
资金
- CNR
- Universita di Palermo
- MIUR
An Au/CeO2 model catalyst was prepared by deposition-precipitation, with the aim of obtaining a sample suitable for a detailed X-ray absorption fine structure (XAFS) analysis of the gold-ceria interface structure. The results demonstrate the existence of a large interface between the gold particle and the support oxide, characterized by well-defined Au-O and Au-Ce interactions extending up to similar to 6.4 angstrom. The complex interface structure is retained after CO treatment up to 250 degrees C and subsequent reoxidation at 400 degrees C. The analysis of the XANES spectra, and the Au-O distance of 2.21 angstrom, longer than Au-O bond lengths previously reported for Au/ceria catalysts, suggest a low oxidation state for the gold atoms placed at the interface between Au and ceria.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据