期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 45, 页码 39594-39601出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b11916
关键词
metal-organic-frameworks; bimetal oxides; CO oxidation; CeO2; hollow; catalysis
资金
- Shandong Provincial Natural Science Foundation, China [ZR2015BM008]
- Special Fund for Local Science and Technology Development [Z135050009017]
Metal organic frameworks (MOFs) have been widely used to prepare corresponding porous metal oxides via thermal treatment. However, high temperature treatment always leads to obtained metal oxides with a large crystallite size, thus decreasing their specific surface area. Different from the conventional complete thermal decomposition of MOFs, herein, using Ce-MOF as a demonstration, we choose partial thermal decomposition of MOF, followed by selective etching to prepare porous/hollow structured ceria because of the poor stability of Ce-MOF under acidic conditions. Compared with the ceria derived from complete thermal decomposition of Ce-MOF, the as-prepared ceria is demonstrated to be a good support for copper oxide species during the CO oxidation catalytic reaction. Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and hydrogen temperature-programmed reduction (H-2-TPR) analysis revealed that the as-prepared ceria is favorable for strengthening the interaction between the ceria and loaded copper oxide species. This work is expected to open a new, simple avenue for the synthesis of metal oxides from MOFs via partial thermal decomposition.
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