Details
| Original language | English |
|---|---|
| Pages (from-to) | 11602-11610 |
| Number of pages | 9 |
| Journal | Journal of Physical Chemistry C |
| Volume | 123 |
| Issue number | 18 |
| Early online date | 12 Apr 2019 |
| Publication status | Published - 9 May 2019 |
Abstract
Phase transitions between different states of a system often involve a long-term maturation process known as ripening, whose mechanism can take various forms. Recent experimental investigations on phase transitions involving vanadium oxides on rhodium have shown the existence of a new ripening mechanism, during which micrometric islands of a dense VOx phase move and coalesce exclusively in the presence of a catalytic reaction. It was hypothesized that this new pathway is fueled by an underlying polymerization/depolymerization process. In this work, we develop a generic reaction-diffusion model containing the basic physicochemical ingredients of these systems. This model reproduces qualitatively the observed behaviors and confirms that it can be traced back to an interplay between intermolecular interactions and the nonequilibrium polymerization process.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Energy(all)
- General Energy
- Chemistry(all)
- Physical and Theoretical Chemistry
- Materials Science(all)
- Surfaces, Coatings and Films
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In: Journal of Physical Chemistry C, Vol. 123, No. 18, 09.05.2019, p. 11602-11610.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Modeling the Formation and Propagation of VOx Islands on Rh(111) under Reactive Conditions
AU - De Decker, Yannick
AU - Raghamy, Amir
AU - Imbihl, Ronald
N1 - Funding information: The authors would like to thank B. von Boehn for providing details and for fruitful discussions concerning experiments and A. S. Mikhailov for useful comments and stimulating discussions.
PY - 2019/5/9
Y1 - 2019/5/9
N2 - Phase transitions between different states of a system often involve a long-term maturation process known as ripening, whose mechanism can take various forms. Recent experimental investigations on phase transitions involving vanadium oxides on rhodium have shown the existence of a new ripening mechanism, during which micrometric islands of a dense VOx phase move and coalesce exclusively in the presence of a catalytic reaction. It was hypothesized that this new pathway is fueled by an underlying polymerization/depolymerization process. In this work, we develop a generic reaction-diffusion model containing the basic physicochemical ingredients of these systems. This model reproduces qualitatively the observed behaviors and confirms that it can be traced back to an interplay between intermolecular interactions and the nonequilibrium polymerization process.
AB - Phase transitions between different states of a system often involve a long-term maturation process known as ripening, whose mechanism can take various forms. Recent experimental investigations on phase transitions involving vanadium oxides on rhodium have shown the existence of a new ripening mechanism, during which micrometric islands of a dense VOx phase move and coalesce exclusively in the presence of a catalytic reaction. It was hypothesized that this new pathway is fueled by an underlying polymerization/depolymerization process. In this work, we develop a generic reaction-diffusion model containing the basic physicochemical ingredients of these systems. This model reproduces qualitatively the observed behaviors and confirms that it can be traced back to an interplay between intermolecular interactions and the nonequilibrium polymerization process.
UR - http://www.scopus.com/inward/record.url?scp=85065617215&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.9b00427
DO - 10.1021/acs.jpcc.9b00427
M3 - Article
AN - SCOPUS:85065617215
VL - 123
SP - 11602
EP - 11610
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 18
ER -