Document Type
Article
Original Publication Date
2017
Journal/Book/Conference Title
ACS Applied Materials & Interfaces
Volume
9
Issue
21
First Page
17961
Last Page
17968
DOI of Original Publication
10.1021/acsami.7b03555
Date of Submission
July 2017
Abstract
In this article, we report the lowest-temperature CO oxidation catalyst supported on metal–organic frameworks (MOFs). We have developed a facile, general, and effective approach based on microwave irradiation for the incorporation of Pd nanoparticle catalyst within Ce-MOF. The resulting Pd/Ce-MOF material is a unique catalyst that is capable of CO oxidation at modest temperatures and also of efficient uptake of the product CO2 gas at low temperatures. The observed catalytic activity of this material toward CO oxidation is significantly higher than those of other reported metal nanoparticles supported on MOFs. The high activity of the Pd/Ce-MOF catalyst is due to the presence of Ce(III) and Ce(IV) ions within the metal–organic framework support. The Pd nanoparticles supported on the Ce-MOF store oxygen in the form of a thin palladium oxide layer at the particle–support interface, in addition to the oxygen stored on the Ce(III)/Ce(IV) centers. Oxygen from these reservoirs can be released during CO oxidation at 373 K. At lower temperatures (273 K), the Pd/Ce-MOF has a significant CO2 uptake of 3.5 mmol/g.
Rights
© 2017 American Chemical Society
Is Part Of
VCU Chemistry Publications
Comments
Originally published at https://doi.org/10.1021/acsami.7b03555