Atomically Resolved Studies of Catalytic and Photocatalytic Processes on TiO2(110)
EMSL Project ID
25619
Abstract
This proposal is a continuation of research under EMSL User Proposal #14591. In the last two decades, titanium dioxide has emerged as an extremely promising material with numerous applications in such diverse and technologically important areas as heterogeneous catalysis, photocatalytic H2O splitting, transparent coating for self-cleaning surfaces, and solar cells. This widespread applicability has led to extensive fundamental and applied research aimed at understanding the underlying physical and chemical processes on pristine and doped forms of TiO2. Despite extensive effort, numerous important questions about what properties control the TiO2 activity remain unresolved. Even the adsorption of simple molecules, such as water and methanol, on the prototypical, rutile TiO2(110) surface is still being actively investigated. In our proposed research we will focus on the detailed atomic/molecular level understanding of catalytic and photocatalytic activity of TiO2 surfaces with simple adsorbates. In particular we will focus on: (1) Thermally and Photo-activated Water Splitting on TiO2(110) and (2) Adsorption and Dissociation of Organics on TiO2(110)
Project Details
Project type
Large-Scale EMSL Research
Start Date
2007-06-01
End Date
2010-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members
Related Publications
Du Y, NA Deskins, Z Zhang, Z Dohnalek, M Dupuis, and I Lyubinetsky. 2009. "Two Pathways for Water Interaction with Oxygen Adatoms on TiO2(110)." Physical Review Letters 102(9):Art. No. 096102. doi:10.1103/PhysRevLett.102.096102
Kim J, BD Kay, and Z Dohnalek. 2010. "Formaldehyde Polymerization on (WO3)3/TiO2(110) Model Catalyst." Journal of Physical Chemistry C 114(40):17017-17022.
Petrik NG, Z Zhang, Y Du, Z Dohnalek, I Lyubinetsky, and GA Kimmel. 2009. "Chemical Reactivity of Reduced TiO2(110): The dominant role of surface defects in oxygen chemisorption." Journal of Physical Chemistry C 113(28):12407-12411. doi:10.1021/jp901989x
Zhang Z, Y Du, NG Petrik, GA Kimmel, I Lyubinetsky, and Z Dohnalek. 2009. "Water as a Catalyst: Imaging Reactions of O-2 with Partially and Fully Hydroxylated TiO2(110) Surfaces." Journal of Physical Chemistry C 113(5):1908-1916.