| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5425513 | Surface Science | 2007 | 9 Pages |
Abstract
Presented are thermal desorption spectroscopy (TDS) measurements of iso-/n-butane adsorption on a variety of TiO2 nanotubes (TiNTs) samples which are characterized by different crystal structures. The results are compared with a prior study on anatase(0Â 0Â 1) thin films grown on SrTiO3(0Â 0Â 1). A distinct kinetic structure-activity relationship was present, i.e., the binding energies of the alkanes depend on the polymorph (anatase vs. mixed anatase/rutile) of TiO2. A direct-fitting procedure of the TDS data has been applied to extract the kinetics parameters. The binding energies in the limit of zero coverage decrease as anatase thin film > amorphous-TiNTs â¼ polycrystalline anatase TiNTs > polycrystalline mixed anatase/rutile TiNTs.
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Authors
B. Hokkanen, S. Funk, U. Burghaus, A. Ghicov, P. Schmuki,