Surface-selective direct 17O DNP NMR of CeO2 nanoparticles

Surface-selective direct 17O DNP has been demonstrated for the first time on CeO2 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...

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Bibliographic Details
Main Authors: Hope, Michael A., Halat, David M., Magusin, Pieter C.M.M., Paul, Subhradip, Peng, Luming, Grey, Clare P.
Format: Article
Published: Royal Society of Chemistry 2017
Online Access:https://eprints.nottingham.ac.uk/42185/
Description
Summary:Surface-selective direct 17O DNP has been demonstrated for the first time on CeO2 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.