Role of ethylene on surface oxidation of TiO2(110)
Abstract
Using in situ high-temperature (700-1000 K) scanning tunneling microscopy (STM), we studied the influence of ethylene on the surface dynamics of oxygen-deficient, rutile-structured TiO2(110). STM images were acquired during annealing the sample as a function of time, oxygen and ethylene pressures, and temperature. With increasing oxygen pressure and/or decreasing temperature, TiO2(110) surface mass increased, consistent with previous results. Interestingly, annealing the sample in ethylene with traces of oxygen also results in the growth of TiO2 at higher rates than those observed during annealing in pure oxygen. Our results indicate that ethylene promotes oxidation of TiO2(110).
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 19, 2012
- Source ID
- 10.1063/1.4767954
Entities
People
- C. V. Ciobanu
- I. Petrov
- S. Kodambaka
- V. Petrova
- Yasuhiro Murata
Organizations
- Air Force Office of Scientific Research
- Colorado School of Mines
- National Science Foundation
- University of California, Los Angeles
- University of Illinois Urbana–Champaign