Colloidal Synthesis of Monodisperse High-Entropy Spinel Oxide Nanocrystals

Colloidal Synthesis of Monodisperse High-Entropy Spinel Oxide Nanocrystals

Synthesis of high-entropy oxide (HEO) nanocrystals has focused on increasing the temperature in the entropy term (T(ΔS)) to overcome the enthalpy term. However, these high temperatures lead to large, polydisperse nanocrystals. In this work, we leverage the low solubility product (K sp) of metal oxid...

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Veröffentlicht in:Journal of the American Chemical Society 2024-07, Vol.146 (26), p.17613-17617
Hauptverfasser: Rowell, Jonathan L., Kang, Minsoo, Yoon, Dasol, Jiang, Kevin Zhijian, Jia, Yafu, Abruña, Héctor D., Muller, David A., Robinson, Richard D.
Format: Artikel
Sprache:eng
Schlagworte:
cations
enthalpy
entropy
esterification
nanocrystals
oxygen production
solubility
temperature
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Zusammenfassung:Synthesis of high-entropy oxide (HEO) nanocrystals has focused on increasing the temperature in the entropy term (T(ΔS)) to overcome the enthalpy term. However, these high temperatures lead to large, polydisperse nanocrystals. In this work, we leverage the low solubility product (K sp) of metal oxides and optimize the Lewis-acid-catalyzed esterification reaction for equal rate production of the cation monomers to synthesize HEO nanocrystals at low temperatures, producing the smallest (
ISSN:0002-7863
1520-5126
1520-5126
DOI:10.1021/jacs.4c04744