Original scientific paper

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

Abstract

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.

Keywords

ZnO fibers; graphene oxide; electrospinning; electron microscopy; Raman spectroscopy; X-ray diffraction

Hrčak ID:

131523

URI

https://hrcak.srce.hr/131523

Publication date:

22.12.2014.

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