期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 21, 期 4, 页码 1226-1233出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0jm02381g
关键词
-
资金
- Ministere Francais de l'Enseignement Superieur et de la Recherche and Research Ministry (MENESR)
- CNRS [UMR 8180]
- Ministry of Education, Science and Technology of Korea [KN-1037]
- KICOS
- [ANR-06-BLAN 60353-02 Methanox]
Successful encapsulation of polyoxometalate (POM) within the framework of a mesoporous iron trimesate MIL-100(Fe) sample has been achieved by direct hydrothermal synthesis in the absence of fluorine. XRPD, P-31 MAS NMR, IR, EELS, TEM and Fe-57 Mossbauer spectrometry corroborate the insertion of POM within the cavities of the MOF. The experimental Mo/Fe ratio is 0.95, in agreement with the maximum theoretical amount of POM loaded within the pores of MIL-100(Fe), based on steric hindrance considerations. The POM-MIL-100(Fe) sample exhibits a pore volume of 0.373 cm(3) g(-1) and a BET surface area close to 1000 m(2) g(-1), indicating that small gas molecules can easily diffuse inside the cavities despite the presence of heavy phosphomolybdates. These latter contribute to the decrease in the overall surface area, due to the increase in molar weight, by 65%. Moreover, the resulting Keggin containing MIL-100(Fe) solid is stable in aqueous solution with no POM leaching even after more than 2 months. In addition, no exchange of the Keggin anions by tetrabutylammonium perchlorate in organic media has been observed.
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