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Title

Ανάπτυξη μεσοπορώδων δομών από νανοσωματίδια NiFe2O4 για φωτοκαταλυτική αναγωγή του εξασθενούς χρωμίου (Cr(VI))

Author

Βαξεβάνη, Κατερίνα

Abstract

This study presents the synthesis and textural characterization of porous NiFe₂O₄ nanoparticles and demonstrates their photocatalytic activity for the reduction of toxic hexavalent chromium (Cr(VI)). Nickel ferrite nanoparticles are prepared using the chemical co-precipitation method. X-ray diffraction (XRD) and N₂ physisorption measurements indicated that mesoporous structures of NiFe₂O₄ nanoparticles have a well-define cubic spinel structure and exhibit a high specific surface area (122-159 m2/g) and uniform pore size. The chemical composition of the materials was confirmed by elemental microanalysis (EDS). The as-prepared materials were studied as photocatalysts in the reduction of toxic Cr(VI) to Cr(III). Catalytic studies verified the high activity and stability of the NiFe₂O₄ mesoporous catalyst compared to the bulk-like NiFe2O4 solid and random aggregates of NiFe₂O₄ nanoparticles.

Language

Greek

Issue date

2017-11-23

Collection

School/Department--School of Sciences and Engineering--Department of Chemistry--Graduate theses

Type of Work--Graduate theses

Views

147

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