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Record link: 
http://hdl.handle.net/20.500.12708/133351
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Title: 
Atomic-level electrochemical surface science of TiO₂ rutile (110)
en
Citation: 
Müllner, M., Balajka, J., Schmid, M., Diebold, U., & Mertens, S. (2017). Atomic-level electrochemical surface science of TiO₂ rutile (110). Deutsche Physikalische Gesellschaft (DPG) Frühjahrstagung 2017, Dresden/Germany, Germany. http://hdl.handle.net/20.500.12708/133351
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Publication Type: 
Presentation - Conference Presentation
en
Language: 
English
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Authors: 
Müllner, Matthias 
Balajka, Jan 
Schmid, Michael 
Diebold, U. 
Mertens, Stijn 
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Organisational Unit: 
E134-05 - Forschungsbereich Surface Physics 
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Date (published): 
21-Mar-2017
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Event name: 
Deutsche Physikalische Gesellschaft (DPG) Frühjahrstagung 2017 
de
Event date: 
19-Mar-2017 - 24-Mar-2017
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Event place: 
Dresden/Germany, Germany
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Additional information: 
The rational design of catalysts and other functional materials requires an atomic-level understanding of their structure and of the interface to supporting surfaces. Here, we present an in situ electrochemical STM study of TiO2 rutile (110) with atomic resolution. This is achieved using a new wet-chemical cleaning procedure for the substrate and with Pt-Ir tips. If tungsten tips are used, WO3 is spontaneously formed at the tungsten liquid interface and strongly adsorbs on oxide surfaces below their point of zero charge through an electrostatic mechanism. The tungsten oxide forms 1D oligomers up to a coverage of one monolayer, and can be manipulated and nanopatterned in situ with the scanning probe tip. Under clean conditions, the TiO2 rutile (110) surface shows a bulk-like, unreconstructed structure, which resembles its appearance in vacuum, even though the surface is probably fully hydroxylated.
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Science Branch: 
Physik, Astronomie
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Appears in Collections:
Presentation

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