A Facile Route toward the Increase of Oxygen Content in Nanosized Zeolite by Insertion of Cerium and Fluorinated Compounds | Health & Environmental Research Online (HERO)

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Citation
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HERO ID

4239610

Reference Type

Journal Article

Title

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

Author(s)

Komaty, S; Anfray, C; Zaarour, M; Awala, H; Ruaux, V; Valable, S; Mintova, S

Year

2018

Is Peer Reviewed?

Journal

Molecules
ISSN: 1420-3049

Volume

Issue

Language

English

PMID

29364144

DOI

10.3390/molecules23020037

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.