Abstract
Site-dependent selectivity in oxidation reactions on Pt nanoparticles was identified by conducting IR nanospectroscopy measurements while using allyl-functionalized N-heterocyclic carbenes (allyl-NHCs) as probe molecules. Following exposure to oxidizing conditions the allyl groups in NHCs that were located on the center of Pt nanoparticles were oxidized to hydroxyl while those located on the nanoparticle's periphery were oxidized into carboxylic acid. The superior reactivity on the periphery of the nanoparticles was correlated to higher density of low coordinated atoms on these surface sites.
| Original language | American English |
|---|---|
| Pages (from-to) | 18765-18769 |
| Number of pages | 5 |
| Journal | Physical Chemistry Chemical Physics |
| Volume | 22 |
| Issue number | 34 |
| DOIs | |
| State | Published - 14 Sep 2020 |
Bibliographical note
Funding Information:This research was partially supported by the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (Grant Agreement No. 802769, ERC Starting Grant "MapCat"). S. D. acknowledges the Israeli Ministry of Energy and the Azrieli foundation for financial support. F. D. T. thanks the Director, Office of Science, Office of Basic Energy Sciences and the Division of Chemical Sciences, Geosciences, and Biosciences of the US Department of Energy at LBNL (DE-AC02-05CH11231) for partial support of this work. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the US Department of Energy under contract number DE-AC02-05CH11231. We acknowledge the assistance of Dr Hans Bechtel (Advanced Light Source, Lawrence Berkeley National Lab) in conducting the SINS experiments.
Funding Information:
This research was partially supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (Grant Agreement No. 802769, ERC Starting Grant ‘‘MapCat’’). S. D. acknowledges the Israeli Ministry of Energy and the Azrieli foundation for financial support. F. D. T. thanks the Director, Office of Science, Office of Basic Energy Sciences and the Division of Chemical Sciences, Geosciences, and Biosciences of the US Department of Energy at LBNL (DE-AC02-05CH11231) for partial support of this work. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the US Department of Energy under contract number DE-AC02-05CH11231. We acknowledge the assistance of Dr Hans Bechtel (Advanced Light Source, Lawrence Berkeley National Lab) in conducting the SINS experiments.
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