Understand the structure of well-defined anatase TiO2(001) surfaces is critical for deciphering site-specific thermal and photo-reaction mechanisms on anatase TiO2. We have studied the atomic structure of anatase TiO2(001) epitaxial thin films grown by oxygen plasma assisted molecular beam epitaxy. In situ reflection high-energy electron diffraction, X-ray photoelectron spectroscopy and ex situ high resolution scanning tunneling microscopy (STM) were used to characterize the anatase TiO2(001). Both (1x4) and (4x1) reconstructed terraces are observed. High resolution STM images show that the atomic corrugation of the bright row on the surface is not uniform and highly bias voltage dependent. The bright row can be resolved as three types of features which are originated from two different building blocks. We propose a modified added molecule model for the anatase TiO?2(001) surface structure.

Atomic structure of the anatase TiO<sub>2</sub>(001) surface

247th National Meeting (2014)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.

Atomic structure of the anatase TiO2(001) surface

Atomic structure of the anatase TiO₂(001) surface