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Theoretical Study on (Al2O3)n (n = 1-10 and 30) Fullerenes and H2 Adsorption Properties.
- Source :
-
Inorganic Chemistry . 4/7/2008, Vol. 47 Issue 7, p2274-2279. 6p. 5 Diagrams, 1 Chart, 5 Graphs. - Publication Year :
- 2008
-
Abstract
- The structures and stabilities of (Al2O3)~ (n = 1-10 and 30) clusters were studied by means of first principles calculations. The calculated results reveal that the global minima of small (Al2O3)~ (n = 1-5) clusters are cage structures with high symmetries, in which Al and 0 atoms are three- and two-coordinated, respectively, and are linked to neighbors via single bonds. Beyond (A1203)5, we calculated both cage and cage-dimer structures for (Al2O3)~ (n = 6-10), and the results show that, at this size range, cage-dimer structures are more stable than cage structures. Furthermore, an onion-like motif for (A1203)10 was studied, and it is interesting to find that, at this size, the onion structure is more favorable than cage and cage-dimer structures. For large clusters, a shell structure of Al600~ is suggested. Electronic properties and calculations on hydrogen adsorption of these aluminum oxide structures are reported, and we discuss their possible use as hydrogen storage materials. [ABSTRACT FROM AUTHOR]
- Subjects :
- *FULLERENES
*ADSORPTION (Chemistry)
*CHEMICAL bonds
*HYDROGEN
*ALUMINUM oxide
*DIMERS
Subjects
Details
- Language :
- English
- ISSN :
- 00201669
- Volume :
- 47
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 31989784
- Full Text :
- https://doi.org/10.1021/ic7011364