Affiliation:
1. Institute of Physical Chemistry Polish Academy of Sciences Kasprzaka 44/52 Warsaw 01‐224 Poland
2. Université Grenoble Alpes CEA IRIG MEM Grenoble 38000 France
3. Faculty of Chemistry Warsaw University of Technology Noakowskiego 3 Warsaw 00‐664 Poland
Abstract
AbstractAmong diverse chemical synthetic approaches to zinc oxide nanocrystals (ZnO NCs), ubiquitous inorganic sol–gel methodology proved crucial for advancements in ZnO‐based nanoscience. Strikingly, unlike the exquisite level of control over morphology and size dispersity achieved in ZnO NC syntheses, the purity of the crystalline phase, as well as the understanding of the surface structure and the character of the inorganic–organic interface, have been limited to vague descriptors until very recently. Herein, ZnO NCs applying the standard sol–gel synthetic protocol are synthesized with zinc acetate and lithium hydroxide and tracked the integration of lithium (Li) cations into the interior and exterior of nanoparticles by combining various techniques, including advanced solid‐state NMR methods. In contrast to common views, it is demonstrated that Li+ ions remain kinetically trapped in the inorganic core, enter into a shallow subsurface layer, and generate “swelling” of the surface and interface regions. Thus, this work enabled both the determination of the NCs’ structural imperfections and an in‐depth understanding of the unappreciated role of the Li+ ions in impacting the doping and the passivation of sol–gel‐derived ZnO nanomaterials.
Funder
H2020 Marie Skłodowska-Curie Actions
Agence Nationale de la Recherche
Fundacja na rzecz Nauki Polskiej
Narodowe Centrum Nauki
Ministerstwo Edukacji i Nauki
Cited by
2 articles.
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