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Title: Remarkable NO oxidation on single supported platinum atoms

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep07238· OSTI ID:1185784

Our first-principles density functional theoretical modeling suggests that NO oxidation is feasible on fully oxidized single θ-alumina-supported platinum atoms via a modified Langmuir-Hinshelwood pathway. This is in contrast to the known decrease in NO oxidation activity of supported platinum with decreasing Pt particle size believed to be due to increased platinum oxidation. In order to validate our theoretical study, we evaluated single θ-Al2O3-supported platinum atoms and found them to exhibit remarkable NO oxidation activity. A comparison of turnover frequencies (TOF) of single supported Pt atoms with those of platinum particles for NO oxidation shows that single supported Pt atoms are as active as fully formed platinum particles. The overall picture of NO oxidation on supported Pt is that NO oxidation activity decreases with decreasing Pt particle size but accelerates when Pt is present only as single atoms.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1185784
Journal Information:
Scientific Reports, Vol. 4, Issue 11; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 73 works
Citation information provided by
Web of Science

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Stabilizing a Platinum 1 Single-Atom Catalyst on Supported Phosphomolybdic Acid without Compromising Hydrogenation Activity journal May 2016
Adsorption behavior of Pt embedded on N‐doped graphene sheets toward NO and NH 3 molecules journal July 2019
Recent Advances in Atomic Metal Doping of Carbon-based Nanomaterials for Energy Conversion journal April 2017
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Room-temperature carbon monoxide oxidation by oxygen over Pt/Al2O3 mediated by reactive platinum carbonates journal October 2015
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Single-atom iron catalyst with single-vacancy graphene-based substrate as a novel catalyst for NO oxidation: a theoretical study journal January 2018
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Stabilizing a Platinum 1 Single-Atom Catalyst on Supported Phosphomolybdic Acid without Compromising Hydrogenation Activity journal May 2016
Single Pd Atoms on θ-Al2O3 (010) Surface do not Catalyze NO Oxidation journal April 2017
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