Selectivity of Ru-rich Ru-Ti-O oxide surfaces in parallel oxygen and chlorine evolution reactions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F22%3A00559888" target="_blank" >RIV/61388955:_____/22:00559888 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0333016" target="_blank" >https://hdl.handle.net/11104/0333016</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.electacta.2022.140878" target="_blank" >10.1016/j.electacta.2022.140878</a>
Alternative languages
Result language
angličtina
Original language name
Selectivity of Ru-rich Ru-Ti-O oxide surfaces in parallel oxygen and chlorine evolution reactions
Original language description
The electrocatalytic behaviour of single-phase Ru1-xTixO2 materials was studied to outline general trends controlling the selectivity of oxide-based anodes in parallel oxygen evolution and chlorine evolution reactions. Materials with x ranging between 0 and 0.2 were prepared by spray freeze freeze drying approach. Prepared materials show a non-homogeneous distribution of Ti in the structure with dominant clustering of the Ti along the (001) direction. For materials with x higher than 0.1 the dominant linear clustering of Ti along the z-axis changes, including Ti clustering also along (111) direction. Prepared materials are active in both oxygen evolution and chlorine evolution reactions. The Ti has a pronounced effect on the selectivity of the prepared materials. Ti presence affects the selectivity of the prepared materials in a complex manner. Materials featuring a low Ti content (x∼0.05) retain a preference for oxygen evolution reaction even in presence of chlorides and are more selective for oxygen evolution than pure RuO2. The selectivity towards chlorine evolution increases with increasing Ti content and, apparently, also with clustering of Ti along the (111) direction. The selectivity towards chlorine evolution may be related to the tendency of the prepared catalysts to evolve the oxygen via lattice oxygen evolution reaction (LOER) reflecting the ability of the catalyst surface to form active sites under operando conditions.
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
—
OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
<a href="/en/project/GA21-03037S" target="_blank" >GA21-03037S: Selectivity control of anodic reactions applicable in chlor-alkaline and chlorate processes</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Electrochimica acta
ISSN
0013-4686
e-ISSN
1873-3859
Volume of the periodical
427
Issue of the periodical within the volume
SEP 2022
Country of publishing house
GB - UNITED KINGDOM
Number of pages
13
Pages from-to
140878
UT code for WoS article
000852802700004
EID of the result in the Scopus database
2-s2.0-85135861281