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Molecules 2018, 23(2), 37; https://doi.org/10.3390/molecules23020037

A Facile Route toward the Increase of Oxygen Content in Nanosized Zeolite by Insertion of Cerium and Fluorinated Compounds

1
Laboratoire Catalyse et Spectrochimie, Normandie University, ENSICAEN, UNICAEN, CNRS, 14050 Caen, France
2
ISTCT/CERVOxy Group, Normandie University, UNICAEN, CEA, CNRS, 14050 Caen, France
Both authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 24 November 2017 / Revised: 15 January 2018 / Accepted: 19 January 2018 / Published: 24 January 2018
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Abstract

Enriching oxygen content within nanosized zeolite X (as synthesized Na-X) by insertion of cerium (ion exchanged Ce-X) and functionalization with bromoperfluoro-n-octane (fluorinated F-X) is reported. The materials were fully characterized by powder X-ray diffraction (XRD), dynamic light scattering (DLS), zeta potential, thermogravimetric analysis (TGA), nitrogen adsorption, and nuclear magnetic resonance (19F NMR). The O2 adsorption in the zeolite samples at various concentrations (0 to 165 Torr) at −196 °C was studied by in situ FTIR. The modification of nanosized zeolites did not alter their colloidal stability, crystallinity, porosity, and particle size distribution. The inclusion of cerium and bromoperfluoro-n-octane considerably increase the oxygen capacity by 33% for samples Ce-X and F-X in comparison to the as-synthesized Na-X zeolite. Further, toxicity tests revealed that these materials are safe, which opens the door for their implementation in medical applications, where controlled delivery of oxygen is highly desirable. View Full-Text
Keywords: zeolite; nanocrystals; oxygen adsorption; FTIR; fluorinated zeolite; cerium; toxicity test zeolite; nanocrystals; oxygen adsorption; FTIR; fluorinated zeolite; cerium; toxicity test
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Komaty, S.; Anfray, C.; Zaarour, M.; Awala, H.; Ruaux, V.; Valable, S.; Mintova, S. A Facile Route toward the Increase of Oxygen Content in Nanosized Zeolite by Insertion of Cerium and Fluorinated Compounds. Molecules 2018, 23, 37.

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