Atomistic picture of electronic metal support interaction and the role of water

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10484060" target="_blank" >RIV/00216208:11320/24:10484060 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=TMiOs8IDJo" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=TMiOs8IDJo</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d3ta06595b" target="_blank" >10.1039/d3ta06595b</a>

Result language
angličtina
Original language name
Atomistic picture of electronic metal support interaction and the role of water
Original language description
Single atom catalysis (SAC) represents an emerging area of heterogeneous catalysis but faces challenges related to the low density of active sites and poor thermal stability. In this work, we present new fundamental insights into the nature of electronic metal support interactions (EMSI) coupled with cation exchange, which yield high density of atomically dispersed noble metals on defect-free terraces of cation-terminated reducible oxides. On well-ordered Co3O4(111) films, the mechanism involves temperature-controlled substitution of surface Co2+ and sub-surface Co3+ cations by Pt2+ and Pt4+ species, respectively. The cation exchange with Co2+ is coupled with the partial reduction of Co3O4(111), while the cation exchange with Co3+ involves the charge disproportionation within the Pt species. In the presence of co-adsorbed water, the Pt4+ species are stabilized at the surface in the form of triaqua complexes.Electronic metal support interaction in the Pt/Co3O4(111) model catalysts involves cation exchange yielding atomically dispersed Pt2+ and Pt4+ species. In the presence of water, these can be stabilized in the form of triaqua complexes.
Czech name
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Czech description
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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)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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