Journal
CHEMISTRY OF MATERIALS
Volume 22, Issue 20, Pages 5739-5746Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm101972h
Keywords
-
Funding
- European Community [230868]
Ask authors/readers for more resources
We report the synthesis of highly ordered mesoporous frameworks consisting of nanocrystalline Co3O4 and Keggin-type tungstophosphoric acid (HPW12O40, HPW) compounds using the hard-templating method. The resulting materials feature a Co3O4/HPW solid solution structure with different HPW loadings, i.e., 6, 11, 15, and 36 wt %. Characterization by small-angle X-ray scattering (SAXS), high-resolution transmission electron microscopy (TEM), and N-2 physisorption measurements reveal that all mesoporous frameworks possess a three-dimensional cubic symmetry with large internal Brumauer-Emmett-Teller (BET) surface area (87-141 m(2)g(-1)) and narrow sized pores (ca. 4 nm). The Keggin structure of the incorporated PW12O403- clusters within the composite frameworks was confirmed with X-ray diffused scattering and atomic pair distribution function (PDF) analysis, X-ray photoelectron spectroscopy (XPS), infrared (IR), and diffuse-reflectance UV/vis spectroscopy. Catalytic studies have indicated that these Co3O4/HPW composites can be effective catalysts, exhibiting remarkable catalytic activity on direct decomposition of N2O.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available