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Verger, L., Trebosc, J., Baptiste, B., Furet, E., Denoue, K., Zhang, J., Chevire, F., Le Coq, D., Calvez, L., Lafon, O. & Hernandez, O. (2022) Mechanochemical Synthesis and Study of the Local Structure of NaGaS2 Glass and Glass-Ceramics. Inorganic Chemistry, 
Added by: Richard Baschera (2022-11-25 13:05:49)   Last edited by: Richard Baschera (2022-11-25 13:07:24)
Type de référence: Article
DOI: 10.1021/acs.inorgchem.2c02708
Numéro d'identification (ISBN etc.): 0020-1669
Clé BibTeX: Verger2022
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Catégories: MIOPS
Créateurs: Baptiste, Calvez, Chevire, Denoue, Furet, Hernandez, Lafon, Le Coq, Trebosc, Verger, Zhang
Collection: Inorganic Chemistry
Consultations : 11/265
Indice de consultation : 14%
Indice de popularité : 3.5%
NaGaS2 is a newly discovered compound that has already shown great promise for a variety of applications because of its layered structure and ion exchange properties. In this work, crystalline NaGaS2 has been synthesized by an alternative method to what has been previously published, namely, by mechanochemistry, either by a direct one-step process or by a two-step process. In the one-step process, crystalline NaGaS2 is directly formed by milling sodium sulfide Na2S and gallium(III) sulfide Ga2S3. However, an amorphous material is present in majority together with the crystalline phase. In the two-step process, amorphous NaGaS2 is first obtained by mechanical milling and then heated above its glass transition temperature to obtain a glass-ceramic mainly composed of crystalline NaGaS2. For the two-step process, changes of the local atomic-level structure in amorphous NaGaS2 and after crystallization were analyzed by high-field solid-state nuclear magnetic resonance (NMR) spectroscopy as well as by X-ray total scattering and pair distribution function (PDF) analysis. Based on quantitative analysis on the 23Na NMR spectra, modifying the annealing treatment can promote the formation of the crystalline phase up to a molar fraction of 83.8%.
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