Fig.1

(a) 17O NMR spectra and (b) 17O NMR chemical shifts predicted by DFT calculation of ceria nanoparticles[15]

Fig.2

17O NMR spectra of titania nanostructures labeled with H217O[5]

Fig.3

17O NMR spectra of ceria nanocubes respectively labeled with 17O2 and H217O[16]

Fig.4

Model of hydrous ceria {111} surface and the corresponding 17O NMR spectra[17]

Fig.5

Time-resolved (a) 17O and (b) 1H NMR spectra of γ-Al2O3 nanorods with water[18]

Fig.6

Probing oxygen-oxygen proximities of γ-Al2O3 via 2D 17O double quantum (DQ)-single quantum (SQ) NMR experiment[23]

Fig.7

17O NMR spectra of the oxygen diffusion from surface to bulk in (a) monoclinic and (b) tetragonal ZrO2[21]

Fig.8

Schematic view of the different oxygen atoms in ZnO nanocrystals[19]

Fig.9

(a) 17O DNP SENS (14.1 T) spectrum of 17O enriched CeO2 nanoparticles and (b) the 17O build-up curves for different environments[33]

Fig.10

Conventional 17O NMR spectra of N.A. (a) and 17O labeled (b) ceria nanorods, compared to their direct DNP SENS spectra (c, d)[17]

Fig.11

(a) 2D 17O 3QMAS DNP SENS spectrum of γ-Al2O3 and (b) simulated spectra of different sites (site 1, 2 and 3) based on the parameters extracted from the 3QMAS spectrum[34]