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Séminaire Matias Jobbagy

Publié le 20 février 2019
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6 mars 2019

Le Professeur Matias Jobbagy donnera deux séminaires. Le second s'intitule "Lanthanide basic carbonates and their derived functional nanotextured mixed oxides" et se tiendra le mercredi 6 mars à 9h amphi Jean Besson, Phelma Campus

In the search for reliable methods to prepare versatile inorganic nanobuilding blocks or their precursors, controlled precipitation synthesis offers multiple possibilities. On recent years, well established precipitation procedures based on the homogenous alkalinization known as urea method gained attention. This route successfully lead to a variety of highly controlled Ce(III)-Rare earth(III) multicationic based basic carbonates, versatile precursors to prepare functional Ce(IV)-RE(III) based mixed oxides. Along this presentation two cases will be described and discussed. Firstly, the preparation of nanotextured precursors to obtain Ce(IV)-RE(III) oxidic nanoparticles of tuneable luminescent properties. Secondly, the preparation of thermodynamically stable crystalline precursors to the high yield nanotextured Ce(III-IV)-RE(III) oxidic nanoparticles with catalytic properties.

References:

-Sorbello, C.; Gross, P; Strassert, C. A.; Jobbagy, M.; Barja, B. Ce(IV)-Gd(III) mixed oxides as hosts for Er(III) based upconversion phosphors, ChemPhysChem 2017, 18, 1407-1414.

Sorbello, C.; Barja, B. C.; Jobbágy, M., Monodispersed Ce(IV)-Gd(III)-Eu(III) oxide phosphors for enhanced red emission under visible excitation. Journal of Materials Chemistry C 2014, 2, (6), 1010-1017.

-Jobbágy, M.; Sorbello, C.; Sileo, E. E., Crystalline Ce(III)-La(III) double basic carbonates: A chemical shortcut to obtain nanometric La(III)-doped ceria. Journal of Physical Chemistry C 2009, 113, (25), 10853-10857.

-Sorbello, C.; Jobbagy, M. Hexagonal Ce1-xLnx(OH)CO3 as highly efficient precursors of nanocrystalline Ln(III-IV)-substituted ceria, Crystal Growth and Design, 2017, 17, 5660-5666.


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mise à jour le 20 février 2019

Univ. Grenoble Alpes