Resolving the adsorption of molecular O-2 on the rutile TiO2(110) surface by noncontact atomic force microscopy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10423214" target="_blank" >RIV/00216208:11320/20:10423214 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26620/20:PU137435
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=h0wPO-ZubY" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=h0wPO-ZubY</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1073/pnas.1922452117" target="_blank" >10.1073/pnas.1922452117</a>
Alternative languages
Result language
angličtina
Original language name
Resolving the adsorption of molecular O-2 on the rutile TiO2(110) surface by noncontact atomic force microscopy
Original language description
Interaction of molecular oxygen with semiconducting oxide surfaces plays a key role in many technologies. The topic is difficult to approach both by experiment and in theory, mainly due to multiple stable charge states, adsorption configurations, and reaction channels of adsorbed oxygen species. Here we use a combination of noncontact atomic force microscopy (AFM) and density functional theory (DFT) to resolve O-2 adsorption on the rutile TiO2 (110) surface, which presents a longstanding challenge in the surface chemistry of metal oxides. We show that chemically inert AFM tips terminated by an oxygen adatom provide excellent resolution of both the adsorbed species and the oxygen sublattice of the substrate. Adsorbed O-2 molecules can accept either one or two electron polarons from the surface, forming superoxo or peroxo species. The peroxo state is energetically preferred under any conditions relevant for applications. The possibility of nonintrusive imaging allows us to explain behavior related to electron/hole injection from the tip, interaction with UV light, and the effect of thermal annealing.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Proceedings of the National Academy of Sciences of the United States of America
ISSN
0027-8424
e-ISSN
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Volume of the periodical
117
Issue of the periodical within the volume
26
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
14827-14837
UT code for WoS article
000548160900009
EID of the result in the Scopus database
2-s2.0-85087468038