Synthesis and properties of nanostructured Cr-doped hematite fibres

Robić, Marko; Ristić, Mira; Marciuš, Marijan; Krehula, Stjepko; Musić, Svetozar (2020) Synthesis and properties of nanostructured Cr-doped hematite fibres. Chemical Papers, 74 (12). pp. 4345-4353. ISSN 2585-7290

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Official URL: http://doi.org/10.1007/s11696-020-01247-6

Abstract

Cr-doped α-Fe2O3 fibres were synthesized by combining electrospinning and the thermal treatment of electrospun composite fibres at 500 °C. XRD analysis showed the formation of solid solutions with a corresponding small decrease in the unit-cell volume due to a difference between the ionic radii of Fe3+ and Cr3+ cations. Mössbauer spectroscopy showed that the incorporation of Cr3+ into the α-Fe2O3 crystal structure induced a decrease in the hyperfine magnetic field. Doping of α-Fe2O3 with Cr3+ also influenced the shape and position of IR bands in relation to reference α-Fe2O3 fibres in the corresponding FT-IR spectra. The FE-SEM images of Cr-doped α-Fe2O3 fibres showed that they consisted of interconnected nanoparticles and possessed a hollow substructure. The photocatalytic degradation of rhodamine B using electrospun fibres was also investigated.

Item Type:

Article

Additional Information:

This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://doi.org/10.1007/s11696-020-01247-6

Uncontrolled Keywords:

α-Fe2O3; Cr-doping ; Electrospinning ; XRD ; FE-SEM ; Spectroscopy; Photocatalysis

Subjects:

NATURAL SCIENCES > Chemistry > Inorganic Chemistry
NATURAL SCIENCES > Chemistry > Applied Chemistry

Divisions:

Division of Materials Chemistry

Projects: