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A new pathway for heterogenization of molecular catalysts by non-covalent interactions with carbon nanoreactors

Schröder, Martin

Authors

Martin Schröder



Abstract

A novel approach to heterogenisation of catalytic molecules is demonstrated using the nanoscale graphitic step-edges inside hollow graphitised carbon nanofibres (GNFs). The presence of the fullerene C60 moiety within a fullerene-salen CuII complex is essential for anchoring the catalyst within the GNF nanoreactor as demonstrated by comparison with the analogous catalyst complex without the fullerene group. The presence of the catalyst at the step-edges of the GNFs is confirmed by high resolution transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX) with UV/Vis spectroscopy demonstrating only negligible (c.a. 3 %) desorption of the fullerene-salen CuII complex from the GNFs into solution under typical reaction conditions. The catalyst immobilised in GNFs shows good catalytic activity and selectivity towards styrene epoxidation, comparable to the analogous catalyst in solution. Moreover, the fullerene-salen CuII complex in GNFs demonstrates excellent stability and recyclability as it can be readily separated from the reaction mixture and employed in multiple reaction cycles with minimal loss of activity, which is highly advantageous compared to catalysts not stabilised by the graphitic step-edges that desorb rapidly from GNFs.

Citation

Schröder, M. (2014). A new pathway for heterogenization of molecular catalysts by non-covalent interactions with carbon nanoreactors. Chemistry of Materials, 26(22), https://doi.org/10.1021/cm502986d

Journal Article Type Article
Acceptance Date Sep 1, 2014
Publication Date Oct 21, 2014
Deposit Date Aug 26, 2015
Publicly Available Date Aug 26, 2015
Journal Chemistry of Materials
Print ISSN 0897-4756
Electronic ISSN 0897-4756
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 26
Issue 22
DOI https://doi.org/10.1021/cm502986d
Public URL http://eprints.nottingham.ac.uk/id/eprint/29687
Publisher URL http://pubs.acs.org/doi/abs/10.1021/cm502986d
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf
Additional Information Date of acceptance is estimated.

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf


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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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