On the Fate of Lithium Ions in Sol–Gel Derived Zinc Oxide Nanocrystals. Olejnik‐Fehér, N., Jędrzejewska, M., Wolska‐Pietkiewicz, M., Lee, D., Paëpe, G. D., & Lewiński, J. Small, March, 2024.
On the Fate of Lithium Ions in Sol–Gel Derived Zinc Oxide Nanocrystals [link]Paper  doi  abstract   bibtex   3 downloads  
Abstract Among 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.
@article{olejnikfeher_fate_2024,
	title = {On the {Fate} of {Lithium} {Ions} in {Sol}–{Gel} {Derived} {Zinc} {Oxide} {Nanocrystals}},
	issn = {1613-6810, 1613-6829},
	url = {https://onlinelibrary.wiley.com/doi/10.1002/smll.202309984},
	doi = {10.1002/smll.202309984},
	abstract = {Abstract
            
              Among 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.},
	language = {en},
	urldate = {2024-04-08},
	journal = {Small},
	author = {Olejnik‐Fehér, Natalia and Jędrzejewska, Maria and Wolska‐Pietkiewicz, Małgorzata and Lee, Daniel and Paëpe, Gaël De and Lewiński, Janusz},
	month = mar,
	year = {2024},
	keywords = {lithium, nanocrystals, solid-state NMR, sol–gel, zinc oxide},
	pages = {2309984},
}

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