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Engineering Pt-CeO2 interfaces for reverse water-gas shift (RWGS) reaction

dos Santos, Kauê G.G. ; Thill, Alisson S. ; Matte, Livia P. ; Girotto, Gustavo Z. LU ; Costa, Mateus V. ; Bohn, Denise R. ; Poletto, Fernanda and Bernardi, Fabiano (2024) In RSC Applied Interfaces 1(5). p.992-1000
Abstract

Nowadays, Pt-CeO2 interfaces are very popular in many applications. In particular, this system is widely used in catalysis for the reverse water gas-shift (RWGS) reaction aiming to stop the dangerous advancement of the global warming effect. Nevertheless, some complex atomic events occurring at this interface are still unclear. In this work, superhydrophobic Pt-CeO2 nanoparticles were used in the RWGS reaction aiming to shift the equilibrium of the RWGS reaction towards the formation of CO. It was demonstrated that this sample presents a highly reducible CeO2 surface and an easy tunability of the O vacancy population, which is the main active site of metal oxides in catalysis. Consequently, the... (More)

Nowadays, Pt-CeO2 interfaces are very popular in many applications. In particular, this system is widely used in catalysis for the reverse water gas-shift (RWGS) reaction aiming to stop the dangerous advancement of the global warming effect. Nevertheless, some complex atomic events occurring at this interface are still unclear. In this work, superhydrophobic Pt-CeO2 nanoparticles were used in the RWGS reaction aiming to shift the equilibrium of the RWGS reaction towards the formation of CO. It was demonstrated that this sample presents a highly reducible CeO2 surface and an easy tunability of the O vacancy population, which is the main active site of metal oxides in catalysis. Consequently, the Pt-CeO2 superhydrophobic sample presents improved performance towards CO formation in the RWGS reaction. During the RWGS reaction, the Pt nanoparticles suffer from the strong metal-support interaction (SMSI) effect that may hinder the catalytically active sites but, even so, the superhydrophobic Pt-CeO2 nanoparticles are active in the RWGS reaction. It opens new frontiers in the engineering of active superhydrophobic Pt-CeO2 interfaces with tunable O vacancy population.

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publishing date
type
Contribution to journal
publication status
published
in
RSC Applied Interfaces
volume
1
issue
5
pages
9 pages
publisher
Royal Society of Chemistry
external identifiers
  • scopus:86000750426
DOI
10.1039/d4lf00064a
language
English
LU publication?
no
additional info
Publisher Copyright: © 2024 RSC.
id
603d9fe3-6ad5-4d3b-91c4-3c663db8725a
date added to LUP
2025-10-10 12:47:36
date last changed
2025-10-17 14:23:41
@article{603d9fe3-6ad5-4d3b-91c4-3c663db8725a,
  abstract     = {{<p>Nowadays, Pt-CeO<sub>2</sub> interfaces are very popular in many applications. In particular, this system is widely used in catalysis for the reverse water gas-shift (RWGS) reaction aiming to stop the dangerous advancement of the global warming effect. Nevertheless, some complex atomic events occurring at this interface are still unclear. In this work, superhydrophobic Pt-CeO<sub>2</sub> nanoparticles were used in the RWGS reaction aiming to shift the equilibrium of the RWGS reaction towards the formation of CO. It was demonstrated that this sample presents a highly reducible CeO<sub>2</sub> surface and an easy tunability of the O vacancy population, which is the main active site of metal oxides in catalysis. Consequently, the Pt-CeO<sub>2</sub> superhydrophobic sample presents improved performance towards CO formation in the RWGS reaction. During the RWGS reaction, the Pt nanoparticles suffer from the strong metal-support interaction (SMSI) effect that may hinder the catalytically active sites but, even so, the superhydrophobic Pt-CeO<sub>2</sub> nanoparticles are active in the RWGS reaction. It opens new frontiers in the engineering of active superhydrophobic Pt-CeO<sub>2</sub> interfaces with tunable O vacancy population.</p>}},
  author       = {{dos Santos, Kauê G.G. and Thill, Alisson S. and Matte, Livia P. and Girotto, Gustavo Z. and Costa, Mateus V. and Bohn, Denise R. and Poletto, Fernanda and Bernardi, Fabiano}},
  language     = {{eng}},
  month        = {{04}},
  number       = {{5}},
  pages        = {{992--1000}},
  publisher    = {{Royal Society of Chemistry}},
  series       = {{RSC Applied Interfaces}},
  title        = {{Engineering Pt-CeO<sub>2</sub> interfaces for reverse water-gas shift (RWGS) reaction}},
  url          = {{http://dx.doi.org/10.1039/d4lf00064a}},
  doi          = {{10.1039/d4lf00064a}},
  volume       = {{1}},
  year         = {{2024}},
}