Surface-selective direct $^{17}$O DNP NMR of CeO$_{2}$ nanoparticles

Hope, MA; Halat, DM; Magusin, PCMM; Paul, S; Peng, L; Grey, CP

Surface-selective direct $^{17}$O DNP NMR of CeO$_{2}$ nanoparticles

Published version

Peer-reviewed

Repository URI

https://www.repository.cam.ac.uk/handle/1810/263536

Repository DOI

https://doi.org/10.17863/CAM.8883

Files

Published version (1.89 MB)

Type

Article

Authors

Hope, MA

Halat, DM

Magusin, PCMM

Paul, S

Peng, L

Show 1 more

Abstract

Surface-selective direct $17$ O DNP has been demonstrated for the first time on CeO $2$ nanoparticles, for which the first three layers can be distinguished with high selectivity. Polarisation build-up curves show that the polarisation of the (sub-)surface sites builds up faster than the bulk, accounting for the remarkable surface selectivity.

Keywords

34 Chemical Sciences, 3406 Physical Chemistry, Nanotechnology, Bioengineering

Journal Title

Chemical Communications

Journal ISSN

1359-7345
1364-548X

Volume Title

53

Publisher

Royal Society of Chemistry

Publisher DOI

https://doi.org/10.1039/C6CC10145C

Rights

Attribution 4.0 International

Sponsorship

Royal Society (NA150567)

We are grateful for financial support by the Oppenheimer Foundation (M. A. H.), the Cambridge Commonwealth Trusts (D. M. H.), the National Natural Science Foundation of China (NSFC) (21573103 and 21661130149) and the Royal Society Newton Fund (L. P.). The DNP experiments were performed at the DNP MAS NMR Facility at the University of Nottingham, with thanks to the EPSRC for funding of pilot studies (EP/L022524/1).

Relationships

Is supplemented by:

https://doi.org/10.17863/CAM.7267

Collections

Scholarly Works - Chemistry
Symplectic mapped items for data match