Stefan Wendt

TL;DR: It is argued that Ti interstitials in the near-surface region may play a key role in and may dictate the ensuing surface chemistry, such as providing the electronic charge required for O2 adsorption and dissociation.

TL;DR: From an interplay between high-resolution scanning tunneling microscopy (STM) and density functional theory (DFT), the authors in this paper discuss the origin of various point defects on reduced rutile TiO2(1/1/0)-(1 × 1) surfaces.

TL;DR: The adhesion of gold clusters is strongest on the oxidized support, and the implications of this finding for catalytic applications are discussed.

TL;DR: High-resolution scanning tunneling microscopy and density functional theory are utilized to study the interaction of water with the reduced TiO2(110)-(1 x 1) surface and it is shown that hydroxyl groups facilitate the diffusion of water molecules over the oxygen rows.

TL;DR: It is demonstrated that this particular elemental segregation provides optimal positioning of the unoccupied d-orbital states, which results in an enhanced utilization of the photoexcited electrons in redox reactions, and it is considered that the enhanced activity observed on TiO2 is generic in nature and can be transferred to other narrow band gap semiconductor supports for visible light photocatalysis.