Croatica Chemica Acta, Vol. 87 No. 4, 2014.
Izvorni znanstveni članak
https://doi.org/10.5562/cca2409
The Influence of Experimental Conditions on the Formation of ZnO Fibers by Electrospinning
Mira Ristić
orcid.org/0000-0003-0033-9840
; Ruđer Bošković Institute, Bijenička cesta 54, P.O. Box 180, HR-10002, Zagreb, Croatia
Marijan Marciuš
; Ruđer Bošković Institute, Bijenička cesta 54, P.O. Box 180, HR-10002, Zagreb, Croatia
Željka Petrović
; Ruđer Bošković Institute, Bijenička cesta 54, P.O. Box 180, HR-10002, Zagreb, Croatia
Mile Ivanda
; Ruđer Bošković Institute, Bijenička cesta 54, P.O. Box 180, HR-10002, Zagreb, Croatia
Svetozar Musić
; Ruđer Bošković Institute, Bijenička cesta 54, P.O. Box 180, HR-10002, Zagreb, Croatia
Sažetak
The influence of experimental conditions on the formation of ZnO fibers by electrospinning has been investigated. The electrospinning of a viscous suspension containing polyvinylpyrrolidone and zinc acetate in C2H5OH/H2O produced very long fibers (several hundred μm). Upon calcination a thin deposit of precursor fibers at 400 or 500 °C for 1 h the fibers consisting of ZnO nanoparticles were obtained. On the other hand, ZnO fibers were not obtained upon heating a thick deposit of precursor fibers at 600 °C for 6 h. At all three heating temperatures (400, 500 or 600 °C) ZnO nanoparticles with a gradual increase in size were produced. The Raman spectrum of ZnO nanoparticles formed at 600 °C showed additional bands which were assigned to graphene oxide. It was suggested that in the thick deposit the organic com¬ponent did not burn out completely, i.e., the residual carbon (graphite) transformed into graphene oxide for the experimental conditions applied.
Ključne riječi
ZnO fibers; graphene oxide; electrospinning; electron microscopy; Raman spectroscopy; X-ray diffraction
Hrčak ID:
131523
URI
Datum izdavanja:
22.12.2014.
Posjeta: 2.122 *