<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 (2024-03-07), 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 (101¯0) 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 (101¯0) 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. [ABSTRACT FROM AUTHOR]
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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, Benteng ; Li, Yuhong ; Sun, Yunhua ; Peng, Luming ; Xie, Ling-Hai |
Zeitschrift: | Physical Chemistry Chemical Physics (PCCP), Jg. 26 (2024-03-07), Heft 9, S. 7890-7895 |
Veröffentlichung: | 2024 |
Medientyp: | academicJournal |
ISSN: | 1463-9076 (print) |
DOI: | 10.1039/d4cp00035h |
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