The structure of Pd-functionalized UiO-67 during CO<sub>2</sub> hydrogenation

Skorynina, Alina A.; Lazzarini, Andrea; Sannes, Dag Kristian; Kozyr, Elizaveta G.; Ahoba-Sam, Christian; Bordiga, Silvia; Olsbye, Unni; Bugaev, Aram L.

doi:10.1039/d3tc04175a

J. Mater. Chem. C

2024

DOI: 10.1039/d3tc04175a

|View full text |Cite

The structure of Pd-functionalized UiO-67 during CO₂ hydrogenation

Alina A. Skorynina,

Andrea Lazzarini,

Dag Kristian Sannes

et al.

Abstract: Multi-technique operando investigation reveals the detailed evolution of UiO-67 MOF with embedded Pd nanoparticles under CO2 hydrogenation reaction conditions at elevated pressures and temperatures.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Restructuring of Palladium Nanoparticles during Oxidation by Molecular Oxygen

Usoltsev,

Stoian,

Skorynina

et al. 2024

Small

View full text Add to dashboard Cite

An interplay between Pd and PdO and their spatial distribution inside the particles are relevant for numerous catalytic reactions. Using in situ time‐resolved X‐ray absorption spectroscopy (XAS) supported by theoretical simulations, a mechanistic picture of the structural evolution of 2.3 nm palladium nanoparticles upon their exposure to molecular oxygen is provided. XAS analysis revealed the restructuring of the fcc‐like palladium surface into the 4‐coordinated structure of palladium oxide upon absorption of oxygen from the gas phase and formation of core@shell Pd@PdO structures. The reconstruction starts from the low‐coordinated sites at the edges of palladium nanoparticles. Formation of the PdO shell does not affect the average Pd‒Pd coordination numbers, since the decrease of the size of the metallic core is compensated by a more spherical shape of the oxidized nanoparticles due to a weaker interaction with the support. The metallic core is preserved below 200 °C even after continuous exposure to oxygen, with its size decreasing insignificantly upon increasing the temperature, while above 200 °C, bulk oxidation proceeds. The Pd‒Pd distances in the metallic phase progressively decrease upon increasing the fraction of the Pd oxide due to the alignment of the cell parameters of the two phases.

show abstract

Restructuring of Palladium Nanoparticles during Oxidation by Molecular Oxygen

Usoltsev,

Stoian,

Skorynina

et al. 2024

Small

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

The structure of Pd-functionalized UiO-67 during CO₂ hydrogenation

Abstract: Multi-technique operando investigation reveals the detailed evolution of UiO-67 MOF with embedded Pd nanoparticles under CO2 hydrogenation reaction conditions at elevated pressures and temperatures.

Cited by 1 publication

References 70 publications

Restructuring of Palladium Nanoparticles during Oxidation by Molecular Oxygen

Restructuring of Palladium Nanoparticles during Oxidation by Molecular Oxygen

Contact Info

Product

Resources

About

The structure of Pd-functionalized UiO-67 during CO2 hydrogenation

Abstract: Multi-technique operando investigation reveals the detailed evolution of UiO-67 MOF with embedded Pd nanoparticles under CO2 hydrogenation reaction conditions at elevated pressures and temperatures.

Cited by 1 publication

References 70 publications

Restructuring of Palladium Nanoparticles during Oxidation by Molecular Oxygen

Restructuring of Palladium Nanoparticles during Oxidation by Molecular Oxygen

Contact Info

Product

Resources

About

The structure of Pd-functionalized UiO-67 during CO₂ hydrogenation