Member, American Ceramic Society.
Local Structure of Defects on Hydrogen- and Vacuum-Reduced TiO2 Surfaces
Article first published online: 8 MAR 2005
Journal of the American Ceramic Society
Volume 76, Issue 5, pages 1137–1142, May 1993
How to Cite
Zhong, Q., Vohs, J. M. and Bonnell, D. A. (1993), Local Structure of Defects on Hydrogen- and Vacuum-Reduced TiO2 Surfaces. Journal of the American Ceramic Society, 76: 1137–1142. doi: 10.1111/j.1151-2916.1993.tb03731.x
R. H. French—contributing editor
DAB and JMV acknowledge financial support of the National Science Foundation through Presidential Young Investigator's Programs (DMR-90-58557 and CTS-89-57056, respectively).
- Issue published online: 8 MAR 2005
- Article first published online: 8 MAR 2005
- Manuscript No. 195542. Received June 30, 1992; approved March 2, 1993.
A comparative study was performed on two TiO2 (110) surfaces: one annealed in vacuum, the other annealed in hydrogen. Local geometric and electronic structures were characterized using scanning tunneling microscopy and spectroscopy, in conjunction with conventional surface analytical techniques. Each surface exhibited a distinct pattern of electronic and geometric inhomogeneity. The origin of the defect structure resulting from the two treatments is discussed in terms of reduction mechanisms, defect formation thermodynamics, and chemical reactivity. The implication of local variation in the defect structure to the TiO2 interaction with reactive species is also addressed.