<superscript>17</superscript> O solid-state NMR study on exposed facets of ZnO nanorods with different aspect ratios.
In: Physical chemistry chemical physics : PCCP, Jg. 26 (2024-02-28), Heft 9, S. 7890-7895
academicJournal
Zugriff:
The physical and chemical properties of metal oxide nanocrystals are closely related to their exposed facets, so the study on facet structures is helpful to develop facet/morphology-property relationships and rationally design nanostructures with desired properties. In this study, wurtzite ZnO nanorods with different aspect ratios were prepared by controlling the Zn 2+ /OH - ratio, temperature and time in hydrothermal processes. An 17 O solid-state NMR study was performed on these nanorods, after surface 17 O labeling, to explore the relationship of the 17 O NMR signals with the local surface structure of different exposed facets, i.e. , nonpolar (101̄0) and polar (0002) facets. It is observed that, one of the signals, the sharp component of a peak at -18.8 ppm, comprises the contribution from the oxygen ions on the polar (0002) facets, in addition to that from nonpolar (101̄0) facets, which is confirmed by 17 O NMR spectra of ZnO nanorods with controlled aspect ratios and different thermal treatment conditions. This is important for accurately interpreting the 17 O NMR signal of ZnO-containing materials, especially when studying the facet-related mechanisms. The method applied here can also be extended to study the facet-dependent properties of other faceted oxide nanocrystals.
Titel: |
<superscript>17</superscript> O solid-state NMR study on exposed facets of ZnO nanorods with different aspect ratios.
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Autor/in / Beteiligte Person: | Song, B ; Li, Y ; Sun, Y ; Peng, L ; Xie, LH |
Zeitschrift: | Physical chemistry chemical physics : PCCP, Jg. 26 (2024-02-28), Heft 9, S. 7890-7895 |
Veröffentlichung: | Cambridge [England] : Royal Society of Chemistry, c1999-, 2024 |
Medientyp: | academicJournal |
ISSN: | 1463-9084 (electronic) |
DOI: | 10.1039/d4cp00035h |
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