A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
First-principles insight into CO hindered agglomeration of Rh and Pt single atoms on m-ZrO2 (2020)


Kauppinen, M. M., Melander, M. M., & Honkala, K. (2020). First-principles insight into CO hindered agglomeration of Rh and Pt single atoms on m-ZrO2. Catalysis Science and Technology, 10(17), 5847-5855. https://doi.org/10.1039/D0CY00413H


JYU-tekijät tai -toimittajat


Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajatKauppinen, Minttu M.; Melander, Marko M.; Honkala, Karoliina

Lehti tai sarjaCatalysis Science and Technology

ISSN2044-4753

eISSN2044-4761

Julkaisuvuosi2020

Volyymi10

Lehden numero17

Artikkelin sivunumerot5847-5855

KustantajaRoyal Society of Chemistry

JulkaisumaaBritannia

Julkaisun kielienglanti

DOIhttps://doi.org/10.1039/D0CY00413H

Julkaisun avoin saatavuusAvoimesti saatavilla

Julkaisukanavan avoin saatavuusOsittain avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX)https://jyx.jyu.fi/handle/123456789/72100


Tiivistelmä

In this first-principles study we evaluate the thermodynamic and kinetic stability of Rh and Pt single-atoms (SAs) and subnano clusters on the monoclinic zirconia surface with and without a CO atmosphere. To address the kinetic stability and agglomeration of SAs to clusters and nanoparticles, a non-equilibrium nanothermodynamic approach is developed and parametrised using data computed with density functional theory. The bare subnano clusters are more stable than SA and become more so with increasing size, which means the agglomeration is always favoured. CO binds strongly to the single atoms and clusters, and our atomistic thermodynamics treatment indicates that some CO will be present even at ultra-high vacuum conditions. A CO atmosphere is shown to hinder cluster growth from SA, and is even capable of spontaneous cluster disintegration in the case of Pt clusters. Analysis of the CO stretching frequencies reveals that subnano clusters and single atoms should give peaks in the same region, and that using them to distinguish between surface species requires caution.


YSO-asiasanatkatalyytitnanohiukkasetnanorakenteetjalometallitzirkoniumoksidi


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Hankkeet, joissa julkaisu on tehty


OKM-raportointiKyllä

Raportointivuosi2020

JUFO-taso1


Viimeisin päivitys 2024-22-04 klo 13:35