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Article dans une revue
Detrimental Effect and Neutralization of in Situ Produced Water on Zirconia Nanoparticles Obtained by a Nonaqueous Sol–Gel Method
Abstract : In this work, the phase purity and size of zirconia nanocrystals samples were studied in terms of zirconium concentration, added water content and subsequent use of a post solvothermal treatment. The progressive tetragonal-to-monoclinic transformation of zirconia sample was observed to be strongly related to the water content of the alcoholic medium. But more surprisingly, it has been shown that even under initially anhydrous conditions and for particle size below 5 nm, the phase purity of the samples was deteriorated by a side-reaction of alcohol dehydration catalyzed by the surface of the nanoparticles (NPs). Since the phase transformation is essentially driven by the water content of the reaction mixture, we have shown that it was possible to recover an excellent phase purity without the help of any usual dopants
https://hal-unilim.archives-ouvertes.fr/hal-02433804
Contributeur : Beatrice Derory Connectez-vous pour contacter le contributeur
Soumis le : jeudi 26 novembre 2020 - 12:01:58
Dernière modification le : mercredi 3 novembre 2021 - 08:41:02
Archivage à long terme le : : samedi 27 février 2021 - 18:55:36
Contributeur : Beatrice Derory Connectez-vous pour contacter le contributeur
Soumis le : jeudi 26 novembre 2020 - 12:01:58
Dernière modification le : mercredi 3 novembre 2021 - 08:41:02
Archivage à long terme le : : samedi 27 février 2021 - 18:55:36
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