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Tuning graphitic oxide for initiator- and metal-free aerobic epoxidation of linear alkenes

Graphitic oxide has potential as a carbocatalyst for a wide range of reactions. Interest in this material has risen enormously due to it being a precursor to graphene via the chemical oxidation of graphite. Despite some studies suggesting that the chosen method of graphite oxidation can influence th...

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Autores principales: Pattisson, Samuel, Nowicka, Ewa, Gupta, Upendra N., Shaw, Greg, Jenkins, Robert L., Morgan, David J., Knight, David W., Hutchings, Graham J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5056438/
https://www.ncbi.nlm.nih.gov/pubmed/27687877
http://dx.doi.org/10.1038/ncomms12855
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author Pattisson, Samuel
Nowicka, Ewa
Gupta, Upendra N.
Shaw, Greg
Jenkins, Robert L.
Morgan, David J.
Knight, David W.
Hutchings, Graham J.
author_facet Pattisson, Samuel
Nowicka, Ewa
Gupta, Upendra N.
Shaw, Greg
Jenkins, Robert L.
Morgan, David J.
Knight, David W.
Hutchings, Graham J.
author_sort Pattisson, Samuel
collection PubMed
description Graphitic oxide has potential as a carbocatalyst for a wide range of reactions. Interest in this material has risen enormously due to it being a precursor to graphene via the chemical oxidation of graphite. Despite some studies suggesting that the chosen method of graphite oxidation can influence the physical properties of the graphitic oxide, the preparation method and extent of oxidation remain unresolved for catalytic applications. Here we show that tuning the graphitic oxide surface can be achieved by varying the amount and type of oxidant. The resulting materials differ in level of oxidation, surface oxygen content and functionality. Most importantly, we show that these graphitic oxide materials are active as unique carbocatalysts for low-temperature aerobic epoxidation of linear alkenes in the absence of initiator or metal. An optimum level of oxidation is necessary and materials produced via conventional permanganate-based methods are far from optimal.
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spelling pubmed-50564382016-10-24 Tuning graphitic oxide for initiator- and metal-free aerobic epoxidation of linear alkenes Pattisson, Samuel Nowicka, Ewa Gupta, Upendra N. Shaw, Greg Jenkins, Robert L. Morgan, David J. Knight, David W. Hutchings, Graham J. Nat Commun Article Graphitic oxide has potential as a carbocatalyst for a wide range of reactions. Interest in this material has risen enormously due to it being a precursor to graphene via the chemical oxidation of graphite. Despite some studies suggesting that the chosen method of graphite oxidation can influence the physical properties of the graphitic oxide, the preparation method and extent of oxidation remain unresolved for catalytic applications. Here we show that tuning the graphitic oxide surface can be achieved by varying the amount and type of oxidant. The resulting materials differ in level of oxidation, surface oxygen content and functionality. Most importantly, we show that these graphitic oxide materials are active as unique carbocatalysts for low-temperature aerobic epoxidation of linear alkenes in the absence of initiator or metal. An optimum level of oxidation is necessary and materials produced via conventional permanganate-based methods are far from optimal. Nature Publishing Group 2016-09-30 /pmc/articles/PMC5056438/ /pubmed/27687877 http://dx.doi.org/10.1038/ncomms12855 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Pattisson, Samuel
Nowicka, Ewa
Gupta, Upendra N.
Shaw, Greg
Jenkins, Robert L.
Morgan, David J.
Knight, David W.
Hutchings, Graham J.
Tuning graphitic oxide for initiator- and metal-free aerobic epoxidation of linear alkenes
title Tuning graphitic oxide for initiator- and metal-free aerobic epoxidation of linear alkenes
title_full Tuning graphitic oxide for initiator- and metal-free aerobic epoxidation of linear alkenes
title_fullStr Tuning graphitic oxide for initiator- and metal-free aerobic epoxidation of linear alkenes
title_full_unstemmed Tuning graphitic oxide for initiator- and metal-free aerobic epoxidation of linear alkenes
title_short Tuning graphitic oxide for initiator- and metal-free aerobic epoxidation of linear alkenes
title_sort tuning graphitic oxide for initiator- and metal-free aerobic epoxidation of linear alkenes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5056438/
https://www.ncbi.nlm.nih.gov/pubmed/27687877
http://dx.doi.org/10.1038/ncomms12855
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