Naslov
Synthesis and properties of nanostructured Cr- doped hematite fibres

Autori
Robić, Marko ; Ristić, Mira ; Marciuš, Marijan ; Krehula, Stjepko ; Musić, Svetozar

Izvornik
Chemical papers (2585-7290) 74 (2020), 12; 4345-4353

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

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

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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